Dr. Debdas Ghosh

Associate Professor
Department/School/Unit Name
Department of Mathematical Sciences, IIT BHU
Phone No(s): +91 9735453726
Email: debdas.mat@iitbhu.ac.in
Area of Interest: Continuous Optimization

 

  • Optimization Techniques 
  • Operations Research 
  • Engineering Mathematics I
  • Engineering Mathematics II
  • Numerical Techniques 
  • Modern Algebra  
  • Real Analysis 
  • Functional Analysis
  • Universal Human Values II 

 

 

  • World’s Top 2 Percent Scientist by Stanford/Elsevier (2024)
  • Second Best Oral Presentation Award, Department of Mathematics, IIT Kharagpur (2014)
  • Best Poster Presentation Award, Department of Mathematics, IIT Kharagpur (2013) 
  • Second Best Poster Presentation Award, Department of Mathematics, IIT Kharagpur (2011) 
  • Prof. J. C. Bose Memorial GOLD Medal, IIT Kharagpur (2009) 
  • Institute Silver Medal, IIT Kharagpur (2009) 
  • Qualified GATE with All India Rank: 8, Percentile: 99.67 (2009) 
  • Qualified NET, JRF-CSIR, All India Rank: 22 (2009) 
  • Best Project Award, IIT Kharagpur (2009) 
  • Stood Second Position in Merit among All Mathematics Honours Students of the University of Calcutta (2007)

 

 

 

 

  • Applied Analysis, Optimization and Soft Computing
    D Ghosh et al. (Eds.)
    Proceedings in Mathematics and Statistics, Volume No. 419, 
    Springer, 2023

 

  • Nonlinear and Variational Analysis 
    D Ghosh and J-C Yao (Eds.)
    SI in Journal of Nonlinear and Convex Analysis, Volume 25, Number 8, 2024

 

  • Contemporary Trends in Vector and Set Optimization  
    D Ghosh and Jiawei Chen (Eds.)
    SI in Journal of Applied Analysis and Optimization, Volume 8, Number 2, 2024 

 

  • Proceedings of IWAAO2024, Taichung, Taiwan  
    J. C. Yao, D. Ghosh, E. Kobis, C. Tammer (Eds.)
    SI in Optimization, Taylor and Francis, 2025

 

 

 

 

    • Optimality conditions for fuzzy optimization problems and its application to classification problems with fuzzy data 
      F Shi, G Ye, W Liu, D Ghosh
      Journal of Computational and Applied Mathematics, 117474, 2026    

     

      • A Quadratically Convergent Newton Method for Uncertain Vector Optimization Problems with Finite Uncertain Scenario 
        Nand Kishor, Debdas Ghosh, Zai-Yun Peng, Shashi Kant Mishra  
        Optimization, Accepted Manuscript, 2026    

       

        • Cubic Regularization Technique of the Newton Method for Vector Optimization 
          Debdas Ghosh 
          Journal of Optimization Theory and Applications, 207 (2025) 39   

         

          • A trust region method for uncertain multiobjective optimization: comparative analysis with existing descent methods 
            Shubham Kumar, Nihar Kumar Mahato, Debdas Ghosh
            Optimization and Engineering, Accepted Manuscript, 2025    

           

            • Nonlinear Conjugate Gradient Methods for Optimization of Set-Valued Maps of Finite Cardinality 
              Debdas Ghosh, Ravi Raushan, Zai-Yun Peng, Jen-Chih Yao
              Journal of Optimization Theory and Applications, 207 (2025) 18   

             

              • A Newton-type Proximal Gradient Method for Uncertain Vector Optimization Problems with Finite Uncertain Scenarios 
                Nand Kishor, Debdas Ghosh, and Xiaopeng Zhao
                Optimization, Accepted Manuscript, 2025 

               

                • A Three-Operator Splitting Scheme Derived from Three-Block ADMM 
                  Anshika, Jiaxing Li, Debdas Ghosh, Xiangxiong Zhang
                  Optimization and Engineering, Accepted Manuscript, 2025 

                 

                  • Steepest Descent Method for Multiobjective Optimization Problems of Interval-Valued Maps 
                    Tapas Mondal, Debdas Ghosh 
                    Numerical Algorithms, Accepted Manuscript, 2025 

                   

                    • Characterization of set order relations and set optimization problems via conic scalarization 
                      Madhusudan Das, Debdas Ghosh, Jen-Chih Yao, Xiaopeng Zhao
                      Journal of Global Optimization, Accepted Manuscript, 2025 

                     

                          • A Method for Uncertain Linear Optimization Problems Through Polytopic Approximation of the Uncertainty Set 
                            Ravi Raushan, Debdas Ghosh, Yong Zhao, Zhou Wei  
                            Journal of Optimization Theory and Applications, 205 (2025) 14 

                           

                            • Nonmonotone Wolfe-type Quasi-Newton Methods for Multiobjective Optimization Problems 
                              Ashutosh Upadhayay, Debdas Ghosh, Krishan Kumar  
                              OptimizationAccepted Manuscript, 2025  

                             

                            • Quasi-Newton Method for Set Optimization Problems with Set-Valued Mapping Given by Finitely Many Vector-Valued Functions 
                              Debdas Ghosh, Anshika, Jen-Chih Yao, Xiaopeng Zhao
                              Numerical Functional Analysis and OptimizationAccepted Manuscript, 2025 

                              

                            • Two Self-Adaptive Stepsize Relaxed Dual Inertial Subgradient Extragradient Methods for Solving Pseudomonotone Variational Inequalities and Demicontractive Fixed Point Problems 
                              Habib ur Rehman, Debdas Ghosh, Yekini Shehu, Xiaopeng Zhao  
                              Computational and Applied Mathematics274 (2025) 44   

                              

                            • Solving an Uncertain Quadratic Multiobjective Optimization Problem Using Newton’s Descent Method Via a Robust Optimization
                              Shubham Kumar, Nihar Kumar Mahato, Md Abu Talhamainuddin Ansary, Debdas Ghosh 
                              Journal of Applied and Numerical Optimization, 7(2), 2025, 149-177 

                             

                              • Composite Tseng-type extragradient algorithms with adaptive inertial correction strategy for solving bilevel split pseudomonotone VIP under split common fixed-point constraint 
                                Lu-Chuan Ceng, Debdas Ghosh, Habib ur Rehman, Xiaopeng Zhao  
                                Journal of Computational and Applied Mathematics470 (2025) 116683

                               

                                • Experimental results of model predictive control of a coupled tank system using interior-point barrier algorithm 
                                  R. Singh, S. Ghosh, D. Ghosh, D. Singh, P. Dworak  
                                  International Journal of Systems ScienceAccepted Manuscript, 2025  

                                 

                                  • Proximal gradient method for convex multiobjective optimization problems without Lipschitz continuous gradients 
                                    X. Zhao, R. Raushan, D. Ghosh, J.-C. Yao, M. Qi  
                                    Computational Optimization and Applications91 (2025) 27-66   

                                   

                                    • A three-block linearized generalized ADMM based iterative algorithm for separable convex programming with application to an image compression problem
                                      X. Q. Zhang, J.-W. Peng, D. Ghosh, J.-C. Yao 
                                      Journal of Computational and Applied Mathematics462 (2025) 116483 

                                     

                                      • Optimal Trajectory Tracking Using Newton and Levenberg-Marquardt-Like Algorithms for Constrained Time-Varying Optimization 
                                        Sunidhi Pandey, Parijat Prasun, Shyam Kamal, Devender Singh, Debdas Ghosh, Sorin Olaru 
                                        Optimal Control Applications and Methods, 46 (2025) 1800-1813 

                                       

                                        • Exact Penalty Method for Constrained Interval Optimization using gH-Mordukhovich Subdifferential 
                                          Suprova Ghosh, Debdas Ghosh, C.-F. Wen  
                                          Journal of Nonlinear and Convex AnalysisAccepted Manuscript, 2025  

                                         

                                        • Solving Equilibrium and Fixed-Point Problems in Hilbert Spaces: A Class of Strongly Convergent Mann-Type Dual-Inertial Subgradient Extragradient Methods
                                          H. U. Rehman, D. Ghosh, J.-C. Yao, X. Zhao  
                                          Journal of Computational and Applied Mathematics464 (2025) 116509 

                                         

                                          • An Improved Nonmonotone Quasi-Newton Method for Multiobjective Optimization Problems 
                                            Krishan Kumar, Abhishek Singh, Ashutosh Upadhyay, D. Ghosh 
                                            Journal of Nonlinear and Convex AnalysisAccepted Manuscript, 2025  

                                           

                                            • Optimality Conditions and Duality Results for Generalized-Hukuhara Subdifferentiable Preinvex Interval-Valued Vector Optimization Problems 
                                              Zai-Yun Peng, Jian-Yi Peng, Debdas Ghosh, Zhao Yong, Li Dan  
                                              Fuzzy Sets and Systems,  515 (2025) 109416

                                             

                                              • Epsilon-Subdifferentiability for Interval-valued Functions and Its Application in Interval Optimization Problems 
                                                Krishan Kumar, D. Ghosh, J-W Chen, J.-C. Yao 
                                                Computational and Applied Mathematics44 (2025) 197   

                                               

                                                • Solving Equilibrium and Fixed-Point Problems in Hilbert Spaces: A New Strongly Convergent Inertial Subgradient Extragradient Method 
                                                  Habib Rehman, Debdas Ghosh, Chinedu Izuchukwu, Xiaopeng Zhao 
                                                  OptimizationAccepted Manuscript, 2025  

                                                 

                                                • Self-adaptive inertial subgradient-like extragradient method for bilevel split pseudomonotone variational inequality with CFPP constraint in Banach spaces
                                                  L.-C. Ceng, H. U. Rehman, D. Ghosh, J.-C. Yao, X. Zhao 
                                                  Fixed Point Theory26(1) (2025) 57-90  

                                                 

                                                • On quasi-inertial double extragradient-type iterations for variational inequalities and Bregman relatively asymptotically nonexpansive mapping
                                                  L-C Ceng, D Ghosh, H Rehman, J-C Yao, X Zhao
                                                  Optimization Engineering26 (2025) 1069–1111

                                                 

                                                • On the Convergence Analysis of a Proximal Gradient Method for Multiobjective Optimization 
                                                  X. Zhao, D. Ghosh, X. Qin, C. Tammer, J.C. Yao 
                                                  TOP: Transactions in Operations Research33 (2025) 102–132  

                                                 

                                                • Steepest Descent Method for Uncertain Multiobjective Optimization Problems Under Finite Uncertainty Set 
                                                  Shubham Kumar, Md Abu T Ansary, Nihar Kumar Mahato, Debdas Ghosh
                                                  Applicable Analysis104(7) (2025) 1163–1184 

                                                 

                                                • A Modified Quasi-Newton Method  for Uncertain Multiobjective Optimization Problems Under Finite Uncertainty Set
                                                  S. Kumar, N. K. Mahato, M. A. T. Ansary, Debdas Ghosh, S. Treant
                                                  Engineering Optimization57(5)  (2025) 1392–1421 

                                                 

                                                • Generalized Ordered Weighted Aggregation Robustness to Solve Uncertain Single Objective Optimization Problems 
                                                  N. Kishor, D. Ghosh, X. Zhao 
                                                  Journal of Nonlinear and Convex Analysis26(3) (2025) 623-652 

                                                 

                                                • A Newton Method for Uncertain Multiobjective Optimization Problems with Finite Uncertainty Set
                                                  Debdas Ghosh, N. Kishor, X. Zhao
                                                  Journal of Nonlinear and Variational Analysis9 (2025) 81–110 

                                                 

                                                • Inexact Newton Method for Solving Generalized Nash Equilibrium Problems
                                                  Abhishek Singh, Debdas Ghosh, QH Ansari 
                                                  Journal of Optimization Theory and Applications201 (2024) 1333–1363 

                                                 

                                                • Generalized Ordered Weighted Aggregation Robustness: A New Robust Counterpart to Solve Uncertain Multi-objective Optimization Problems
                                                  Debdas Ghosh, Nand Kishor 
                                                  Engineering OptimizationAccepted Manuscript, 2024 

                                                 

                                                • Nonlinear Conjugate Gradient Methods for Unconstrained Set Optimization Problems whose Objective Functions have Finite Cardinality
                                                  K. Kumar, D. Ghosh, J-C Yao, X Zhao
                                                  OptimizationAccepted Manuscript, 2024 

                                                 

                                                   

                                                  • A projected gradient method for constrained set optimization problems with set-valued mappings of finite cardinality 
                                                    D Ghosh, K Kumar, J-C Yao, and X Zhao 
                                                    Engineering OptimizationAccepted Manuscript, 2024 

                                                   

                                                  • A Study on Fuzzy Sphere and Fuzzy Cone
                                                    D. Gupta, D. Ghosh, T. Som 
                                                    Information Sciences675 (2024) 120755  

                                                   

                                                     

                                                    • A Projection-type Hybrid Conjugate Gradient Method for Multiobjective Optimization Problems with Application to an SIR Model
                                                      D. Ghosh, A. Upadhyay, Z-Y Peng, Jauny 
                                                      Journal of Nonlinear and Convex AnalysisAccepted Manuscript, 2024 

                                                     

                                                    • Second-Order Strong Optimality and Duality for Nonsmooth Multiobjective Fractional Programming with Constraints
                                                      J. Chen, L. Liu, Y. Lv, Debdas Ghosh, J.-C. Yao
                                                      Positivity28 (2024) 36  

                                                     

                                                    • A new type of Ekeland's principle and its applications 
                                                      M. Ghobadi, A. Farajadeh, D. Ghosh 
                                                      Journal of Nonlinear and Convex AnalysisAccepted Manuscript, 2024 

                                                     

                                                      • Extragradient Methods with Dual Inertial Steps for Solving Equilibrium Problems
                                                        H. Rehman, D. Ghosh, J. C. Yao, X. Zhao 
                                                        Applicable Analysis103(16) (2024) 2941–2976 

                                                       

                                                      • An inexact proximal point method with quasi-distance for quasi-convex multiobjective optimization
                                                        X. Zhao, H. Ji, Debdas Ghosh, J. C. Yao 
                                                        Positivity28 (2024) 43  

                                                       

                                                      • A Nonmonotone Conditional Gradient Method for Multiobjective Optimization Problems
                                                        A. Upadhayay, Debdas Ghosh, Jauny, J. C. Yao, X. Zhao
                                                        Soft Computing28 (2024) 9609–9630  

                                                       

                                                         

                                                        • Improved Nonmonotone Adaptive Trust-region Method to Solve Generalized Nash Equilibrium Problems
                                                          Abhishek Singh, Krishan Kumar, Debdas Ghosh
                                                          Journal of Nonlinear and Convex Analysis25 (1) (2024) 11-29

                                                         

                                                        • Generalized Hukuhara Hadamard Derivative of Interval-valued Functions and Its Applications to Interval Optimization
                                                          RS Chauhan, Debdas Ghosh, QH Ansari 
                                                          Soft Computing, 28 (2024) 4107–4123 

                                                         

                                                        • Numerical Integrator based on Implicit Euler Discretization of Twisting Control Algorithm
                                                          Bhawana Singh, Xiaogang Xiong, Debdas Ghosh, Shyam Kamal 
                                                          IEEE International Workshop on Variable Structure Systems (VSS),  2024, 46-50

                                                         

                                                          • Generalized Hukuhara Weak Subdifferential and its Application on Identifying Optimality Conditions for Nonsmooth Interval-valued Functions
                                                            S. Ghosh, D. Ghosh, A. Pretrusel, X. Zhao
                                                            Journal of Nonlinear and Variational Analysis8(2) (2024) 333-368 

                                                           

                                                           

                                                            • Characterization Of E-Benson Proper Efficient Solutions of Vector Optimization Problems With Variable Ordering Structures in Linear Spaces
                                                              J-W Peng, W-B Wei, Debdas Ghosh, J-C Yao 
                                                              Journal of Nonlinear and Variational Analysis8(4) (2024) 659-680

                                                             

                                                              • A globally convergent improved BFGS method for generalized Nash equilibrium problem 
                                                                Abhishek Singh, Debdas Ghosh
                                                                SeMA JournalAccepted Manuscript, 81 (2024) 235-261   

                                                               

                                                              • Hukuhara Dini Hadamard ε-Subdifferential and Hε-subgradient and their Applications in Interval Optimization
                                                                Anshika, Krishan Kumar, Debdas Ghosh
                                                                Journal of Applied and Numerical Optimization6(2) (2024) 177-202  

                                                               

                                                              • An Infeasible Interior-Point Technique to Generate the Nondominated Set for Multiobjective Optimization Problems 
                                                                Jauny, Debdas Ghosh, Q. H. Ansari, Matthias Ehrgott, A. Upadhayay 
                                                                Computers and Operations Research155 (2023) 106236  

                                                                

                                                                • Generalized Hukuhara Global Subdifferentiability in Interval Optimization Problems
                                                                  Anshika, Krishan Kumar, Debdas Ghosh 
                                                                  Fuzzy Optimization, Decision-making and Operations Research: Theory and ApplicationsSpringer, 135--160, 2023 

                                                                 

                                                                • Cone Method for Uncertain Multiobjective Optimization Problems with Minmax Robustness
                                                                  Ashutosh Upadhayay, Debdas Ghosh, Jauny, Nand Kishor 
                                                                  Combinatorial Optimization Under UncertaintyAccepted Manuscript, 2023 

                                                                 

                                                                • Quasi-Newton Methods for Multiobjective Optimization Problems: A Systematic Review 
                                                                  K. Kumar, Debdas Ghosh, A. Upadhayay, J.C. Yao, X. Zhao
                                                                  Applied Set-Valued Analysis and Optimization5(2) (2023) 291-321 

                                                                 

                                                                • Normal and Tangent Cones for Set of Intervals and their Application in Optimization with Functions of Interval Variables
                                                                  Suprova Ghosh, Debdas Ghosh, Anshika 
                                                                  Soft Computing27 (2023) 10737–10758

                                                                 

                                                                  • Newton's Method for Uncertain Multiobjective Optimization Problems Under Finite Uncertainty Set
                                                                    S. Kumar, M. A. T. Ansary, N. K. Mahato, Debdas Ghosh, Y. Shehu
                                                                    Journal of Nonlinear and Variational Analysis7 (5) (2023) 785-809

                                                                     

                                                                    • Subgradient Extragradient with Extrapolation Procedure for Bilevel Split Variational Inequality
                                                                      Lu-Chuan Ceng, Debdas Ghosh, Yekini Shehu, Jen-Chih Yao
                                                                      Journal of Inequalities and Applications2023 (2023) 14  

                                                                     

                                                                     

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       
                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                       

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                          

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                           

                                                                           

                                                                           

                                                                         

                                                                         

                                                                         

                                                                         
                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                           

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                         

                                                                        • Fuzzy ideal cone method for capturing the entire fuzzy non-dominated set of a fuzzy multi-criteria optimization problem 
                                                                          Silver Jubilee Lecture Series, MIU            
                                                                          Indian Statistical Institute Kolkata           
                                                                          08-Mar-2018 

                                                                         

                                                                        • Real Analysis through Analytical Geometry 
                                                                          Balurghat College Mathematics Camp 2018            
                                                                          Balurghat College, Dakshin Dinajpur, West Bengal           
                                                                          28--30-Oct-2018 

                                                                         

                                                                        • A fuzzy Geometrical Viewpoint to Solve Fuzzy Multiobjective Optimization Problems
                                                                          Short Term Training Programme on Fuzzy Sets and Applications 2018            
                                                                          SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu
                                                                          10-Nov-2018 

                                                                         

                                                                        • A  Detour of Geometrical and Mathematical Viewpoint of Optimality Conditions
                                                                          QIP Sponsored STC on Deep Learning: Theory & Practice 2018           
                                                                          Department of Computer Science and Engineering, IIT (BHU) Varanasi,  
                                                                          17-Dec-2018 

                                                                         

                                                                        • Fuzzy and Interval Optimization for Support Vector Machine Problems  
                                                                          Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 
                                                                          Shenzhen, China           
                                                                          10-July-2019 

                                                                         

                                                                        • A geometrical visit to optimality conditions and duality theory for smooth optimization problems
                                                                          Department of Mathematics, Dibrugarh University, 
                                                                          Assam, India           
                                                                          11-Nov-2019  

                                                                         

                                                                        • Nonlinear programming
                                                                          QIP Sponsored STC on Operations Research: Principles and Applications 2020           
                                                                          Department of Mechanical Engineering, IIT (BHU) Varanasi,  
                                                                          03-Jan-2020 

                                                                         

                                                                        • A cone method for capturing the non-dominated set of a fuzzy multi-criteria optimization
                                                                          Indo-French Seminar on Optimization, Variational Analysis and Applications 2020           
                                                                          Department of Mathematics, Banaras Hindu University, Varanasi,  
                                                                          04-Feb-2020 

                                                                         

                                                                        • Unconstrained Optimization Techniques   
                                                                          FDP on Optimization Techniques & Applications, Sept 21--25, 2020           
                                                                          Department of Computer Science and Engineering, NIT Andhra Pradesh
                                                                          24-Sep-2020 

                                                                         

                                                                        • Nonlinear optimization
                                                                          FDP on Recent Advances in Control Systems, Oct 17--21, 2020 
                                                                          Department of Electrical Engineering, MMMUT, Gorakhpur 
                                                                          20-Oct-2020 

                                                                         

                                                                        • A modern method of optimization 
                                                                          STTP on Fractional Order Robust Control System Design (Series I)           
                                                                          Department of Electrical and Electronics Engineering, Vardhaman College of Engineering, Hyderabad   
                                                                          31-Oct-2020 

                                                                         

                                                                        • Interior point methods in continuous optimization 
                                                                          Lecture Series on Optimization Technique            
                                                                          Department of Mathematics & Statistics, King Fahd University of Petroleum and Minerals, Saudi Arabia
                                                                          08-Nov-2020 and 11-Nov-2020

                                                                           

                                                                          • Coffee-time with fuzzy geometrical ideas and its application on fuzzy multicriteria optimization problems
                                                                            International Conference on Applied Mathematics, June 8--9, 2022 
                                                                            Department of Applied Mathematics with Oceanology and Computer Programming, Vidyasagar University, West Bengal 
                                                                            09-June-2022 

                                                                           

                                                                              • A detour of trust-region methods in optimization 
                                                                                International workshop on Optimization Techniques in Industrial and Engineering Applications
                                                                                Department of Mathematics, VIT AP 
                                                                                07-Jan-2023 

                                                                               

                                                                                  • A nonmonote quasi-Newton method for solving set optimization problems 
                                                                                    International Conference on Variational Analysis and Optimization with Applications 
                                                                                    Department of Mathematics, Aligarh Muslim University 
                                                                                    24-Sep-2023 

                                                                                   

                                                                                  • Coffee-time with Lagrange multipliers for constrained optimization 
                                                                                    School of Mathematics and Information Science, Hebei University, China 
                                                                                    25-April-2024 

                                                                                   

                                                                                      • Quasi-Newton Method for Set Optimization Problems with Nonmonotone Line Search
                                                                                        International Conference on Multiobjective Optimization and Applications 2024  
                                                                                        School of Information and Mathematics, Yangtze University, China 
                                                                                        27-April-2024 

                                                                                       

                                                                                            • Generalized Hukuhara Weak Subdifferential and Its Application on Nonsmooth Interval Optimization 
                                                                                              School of Mathematics and Statistics, Chongqing Jiaotong University, China 
                                                                                              31-May-2024 

                                                                                             

                                                                                                • An infeasible interior-point technique to generate the nondominated set for multiobjective optimization problems
                                                                                                  School of Mathematical Sciences, Chongqing Normal University, China 
                                                                                                  05-June-2024 

                                                                                                 

                                                                                                    • Nonlinear conjugate gradient methods for unconstrained set optimization problems whose objective functions have finite cardinality
                                                                                                      International Workshop on Applied Analysis and Optimization 2024, 
                                                                                                      Research Center for Interneural Computing, China Medical University, Taichung, Taiwan  
                                                                                                      29-June-2024

                                                                                                     

                                                                                                        • Conjugate descent method for set optimization problems 
                                                                                                          Beijing Institute of Technology, China
                                                                                                          06-December-2024 

                                                                                                         

                                                                                                            • Quasi-Newton method for set optimization problems 
                                                                                                              College of Mathematics and Information Sciences, Hebei University, China 
                                                                                                              12-December-2024 

                                                                                                             

                                                                                                                • Infeasible interior-point method for solving multi-objective optimization problems 
                                                                                                                  Chongqing Technology and Business University, China 
                                                                                                                  14-December-2024 

                                                                                                                 

                                                                                                                    • PRP, DY and FR conjugate gradient methods for set-valued optimization problems 
                                                                                                                      School of Mathematical Sciences, Chongqing Normal University, China 
                                                                                                                      18-December-2024 

                                                                                                                     

                                                                                                                        • Conjugate gradient techniques for unconstrained set optimization problems 
                                                                                                                          Chongqing Operations Research Society Conference 2024, Chongqing Jiaotong University, China 
                                                                                                                          23-December-2024 

                                                                                                                         

                                                                                                                            • Nonlinear conjugate gradient methods for unconstrained set optimization problems whose objective functions have finite cardinality
                                                                                                                              3rd One Week International Workshop on Recent Trends in Optimization Techniques for Challenging Engineering Applications 
                                                                                                                              VIT University, Amaravati, India 
                                                                                                                              25-January-2025

                                                                                                                             

                                                                                                                                • On infeasible interior-point technique for multiobjective optimization problems
                                                                                                                                  International Workshop on Applied Analysis and Optimization 2025 
                                                                                                                                  Research Center for Interneural Computing, China Medical University, Taiwan  
                                                                                                                                  13-February-2025

                                                                                                                                 

                                                                                                                                    • Infeasible interior point method for multi-objective optimization 
                                                                                                                                      International Workshop on Theory and Applications of Optimization in Machine Learning
                                                                                                                                      VIT-AP, University, Andhra Pradesh 
                                                                                                                                      06-April-2025

                                                                                                                                     

                                                                                                                                        • The technique of cubic regularization of Newton's method in vector optimization 
                                                                                                                                          National Conference on Nonlinear Analysis, Control and Optimization  
                                                                                                                                          Indian Institute of Technology (ISM), Dhanbad 
                                                                                                                                          04-July-2025

                                                                                                                                         

                                                                                                                                            • Cubic Regularization Technique of the Newton Method for Vector Optimization
                                                                                                                                              First International Workshop on Mathematical Optimization: Theory and Applications 
                                                                                                                                              Yunnan Normal University, Kunming, Yunnan, China
                                                                                                                                              17-July-2025

                                                                                                                                             

                                                                                                                                                • Coffee time with the applications of optimization with machine learning 
                                                                                                                                                  Amity University, Kolkata 
                                                                                                                                                  25-July-2025

                                                                                                                                                 

                                                                                                                                                    • Coffee time with Lagrange multipliers for constrained optimization  
                                                                                                                                                      UGC-Sponsored Refresher Course on Mathematical Sciences 
                                                                                                                                                      North Bengal University, Kolkata 
                                                                                                                                                      19-Nov-2025

                                                                                                                                                     

                                                                                                                                                        • A detour on multivariable calculus   
                                                                                                                                                          Problem-Solving Camp 
                                                                                                                                                          North Bengal University, Kolkata 
                                                                                                                                                          6-8 January 2026 

                                                                                                                                                         

                                                                                                                                                            • Artificial Intelligence and Machine Learning: A Mathematical Optimization Perspective 
                                                                                                                                                              VIT University, Andhra Pradesh, FDP on RADS 2026 
                                                                                                                                                              26-January-2026

                                                                                                                                                             

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                • Fourth International Conference on Mathematics and Computing 2018, IIT (BHU) Varanasi
                                                                                                                                                                  Organizing Chair: Debdas Ghosh 
                                                                                                                                                                  January 09-11, 2018 

                                                                                                                                                                 

                                                                                                                                                                • First International Conference on Mathematical Optimization: Theory and Applications, 2026, IIT (BHU) Varanasi
                                                                                                                                                                  Organizing Chair: Debdas Ghosh 
                                                                                                                                                                  March 14-16, 2026 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                • Institute: National Sun Yat-Sen University, Taiwan  
                                                                                                                                                                  Period: 03 October to 27 October 2022 (Visiting Professor)

                                                                                                                                                                 

                                                                                                                                                                • Institute: National Sun Yat-Sen University, Taiwan  
                                                                                                                                                                  Period: 18 October to 15 November 2023 (Visiting Professor)

                                                                                                                                                                 

                                                                                                                                                                • Institute: Hebei University, China   
                                                                                                                                                                  Period: 24 April to 30 April 2024 (Visiting Professor) 

                                                                                                                                                                 

                                                                                                                                                                • Institute: Chongqing Normal University, China   
                                                                                                                                                                  Period: 30 May to 15 June 2024 (Visiting Professor)  

                                                                                                                                                                 

                                                                                                                                                                • Institute: National Sun Yat-Sen University, Taiwan  
                                                                                                                                                                  Period: 21 June to 5 July 2024 (Visiting Professor)

                                                                                                                                                                 

                                                                                                                                                                • Institute: China Medical University, Taiwan  
                                                                                                                                                                  Period: 31 August to 11 September 2024 (Visiting Professor)

                                                                                                                                                                 

                                                                                                                                                                • Institute: Hebei University and Chongqing Jiaotong University, China   
                                                                                                                                                                  Period: 08 to 24 December 2024 (Visiting Professor) 

                                                                                                                                                                 

                                                                                                                                                                • Institute: China Medical University, Taiwan  
                                                                                                                                                                  Period: 09 to 14 February 2025 (Visiting Professor)

                                                                                                                                                                 

                                                                                                                                                                • Institute: Yunnan Normal University, China 
                                                                                                                                                                  Period: 14 to 20 July 2025 (Invited talks)

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                 

                                                                                                                                                                      Editor in Chief of 

                                                                                                                                                                • Applicable Nonlinear Analysis, Tulipa Opera Scholarum 

                                                                                                                                                                 

                                                                                                                                                                     Editorial board member of 

                                                                                                                                                                • Journal of Optimization Theory and Applications, Springer 
                                                                                                                                                                • Annals of Mathematical Sciences and Applications, International Press of Boston
                                                                                                                                                                • Journal of Mathematics, Wiley 
                                                                                                                                                                • Scientific Reports, Nature 

                                                                                                                                                                 

                                                                                                                                                                     Guest editor of 

                                                                                                                                                                • Optimization, Taylor and Francis 
                                                                                                                                                                • Journal of Nonlinear and Convex Analysis, Yokohama publisher, Japan 
                                                                                                                                                                • Applied Analysis and Optimization, Yokohama publisher, Japan 
                                                                                                                                                                • Positivity, Springer 
                                                                                                                                                                • Journal of Global Optimization, Springer