Dr. Avijit Das

Assistant Professor
Email: avijit@math.nits.ac.in  
Date of Joining: 17-November-2023
Academic Experience: 1.5 years
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  • M.Sc. from Visva-Bharati University
  • Ph.D. from IIT Guwahati
  • Postdoc from IIT Bombay



  • Assistant Professor (Grade-II, Level 10) in the Dept. of Mathematics, NIT Silchar, Assam (current position)
  • Assistant Professor (Grade-II, Level 10) in the Dept. of Mathematics, IIIT Raichur, Karnataka (previous position)


  • Numerical Analysis
  • Differential Equations
  • Finite Element Methods for ODEs and PDEs


  • Qualified joint CSIR-UGC NET DEC. 2016
  • Qualified GATE 2017
  • Best Thesis Award (Dept. of Math, IIT Guwahati)


  1. D. Avijit, S. Natesan, SDFEM for Singularly Perturbed Boundary-Value Problems with Two ParametersJournal of Applied Mathematics and Computing (SCI-Q2),  64 (2020), no 1-2, 591-614  (link)
  2. D. Avijit, S. Natesan,  SDFEM for Singularly Perturbed Parabolic Initial-Boundary-Value Problems on  Equidistributed Grids,  Calcolo (SCI-Q1), 57 (3), 23  (2020) (link)
  3. D. Avijit, S. Natesan,  A Novel Two-Step Streamline-Diffusion FEM for Singularly Perturbed 2D Parabolic PDEs, Applied Numerical Mathematics (SCI-Q1), 172 (2022) 259-278 (link)
  4. D. Avijit, S. Natesan,  Numerical Analysis of a Fully-Discrete Stabilized FEM for System of Singularly Perturbed Parabolic IBVPs, International Journal of Computer Mathematics (SCI-Q2), 99, 8 (2022) 1595-1616 (link)
  5. D. Avijit, S. Natesan,  An Efficient DWR-Type a Posteriori Error Bound of SDFEM for Singularly Perturbed Convection-Diffusion PDEs, Journal of Scientific Computing (SCI-Q1),  90, 73 (2022) (link)
  6. D. Avijit, S. Natesan,  Convergence Analysis of a Fully-discrete FEM for Singularly Perturbed Two-Parameter Parabolic PDE, Mathematics and Computers in Simulation (SCI-Q1), 197 (2022185-206 (link)
  7. D. Avijit, S. Natesan,  Stability and Error Analysis of a Fully-Discrete Numerical Method for Time-Dependent System of 2D Singularly Perturbed PDEs, Computers & Mathematics with Applications (SCI-Q1), 110 (2022) 135–145 (link)


  • 6th International Conference on Mathematics & Computing (ICMC 2020), Department of Computer Applications, Sikkim University, Gangtok, Sikkim, India. (Sept. 23-25, 2020)
  • International Conference on Advances in Differential Equations and Numerical Analysis (ADENA 2020), Department of Mathematics, Indian Institute of Technology Guwahati, India. (Oct. 12-15, 2020)
  • International Conference on Recent Trends in Pure & Applied Mathematics (ICRTPAM 2021), Department of Mathematics, Phuket Rajabhat University, Phuket, Thailand. (Sept. 2-3, 2021)
  • International Conference on Advances in Applied & Computational Mathematics (ICAACM 2021), Department of Mathematics and Statistics, Manipal University, Jaipur, India. ( Sept. 16-17, 2021)
  • International Conference on Computational Partial Differential Equations & Applications (ICCPDEA-2022), Department of Mathematics, BML Munjal University, India. (Sept 06-08, 2022)