Dr. Santanu Sarkar

Assistant Professor
  • Department of Mathematics
  • Indian Institute of Technology Ropar
  • Rupnagar, Punjab - 140001, India
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Dr. Santanu Sarkar is an Assistant Professor in the Department of Mathematics, Indian Institute of technology, Ropar. He obtained his Ph.D. degree from the Indian Institute of Science (IISC),Bangalore, under the guiadance of Prof. Tirthankar Bhattacharyya. After completing his doctoral studies, Dr. Sarkar did 2 years of Post-doctoral research under the guiadance of Prof. Harry Dym at the Weizmann Institute of Science, Israel. After returning from Israel, he worked at the Indian Statistical Institute Bangalore centre as a DST-INSPIRE Faculty for almost 19 months. Dr. Sarkar’s research is focused on various topics of Functional Analysis and Operator Theory.

Areas of Research: 
  1. Operator Theory
  2. Functional Analysis
  • Ph.D. Thesis title: Some problems in multivariable operator theory. Department of Mathematics, Indian Institute of Science, Bangalore, India. 2009 - 2014.
  • M.S. (Mathematics) Department of Mathematics, Indian Institute of Science, Bangalore, India. Project title: Control theory: a brief survey. 2007 - 2009.
  • B.Sc. (Mathematics Honours) Jadavpur University, Kolkata, India. 2004 - 2007.
  • Assistant Professor, IIT Ropar (From 18th May, 2018 - present)
  • DST-INSPIRE Faculty, Stat. Math. Unit, Indian Statistical Institute, Bangalore, India, (From 31st October, 2016 - 16th May, 2018).
  • Postdoctoral research: Department of Mathematics, Weizmann Institute of Science, Rehovot, Israel, (From 8th October, 2014 - 5th October, 2016).
  • 12. Subhankar Mahapatra, Santanu Sarkar, Some aspects of vector valued de Branges spaces of entire functions, to appear in Computational Methods and Function Theory (2026).
  • 11. Bharti Garg, Santanu Sarkar, J-contractive operator valued functions, vector valued de Branges spaces and functional models, J. Math. Anal. Appl. 549 (2025) 129564, 20pp.
  • 10. S. Mahapatra, S. Sarkar, Analytic Kramer sampling and quasi Lagrange-type interpolation in vector valued RKHS, Results in Mathematics, 79, 230 (2024).
  • 9. Subhankar Mahapatra, Santanu Sarkar, Vector valued de Branges spaces of entire functions based on pairs of Fredholm operator valued functions and functional model, Journal of Mathematical Analysis and Applications; 533 (2024), no.2, Paper No. 128010, 36pp.
  • 8. Amit Samanta, Santanu Sarkar, Uncertainty principle for Weyl transform and Fourier Wigner transform, Colloquium Mathematicum, 174 (2023), no.2, 217-227.
  • 7. Amit Samanta, Santanu Sarkar; Boundedness of composition operator on several variable Paley-Wiener space, Linear Algebra and its Applications, 660 (2023) 66-79.
  • 6. A. Samanta, S. Sarkar, Properties of singular integral operators Sα,β, Proc. Indian Acad. Sci. (2018) 128:12.
  • 5. A. Samanta, S. Sarkar, D. Luecking’s finite rank theorem for Toeplitz operator, Benedicks’ theorem on the Heisenberg group, and uncertainty principle for the Fourier-Wigner transform, Journal of Mathematical Sciences, New York. (To appear).
  • 4. H. Dym, S. Sarkar, Multiplication operators with deficiency indices (p,p) and sampling formulas in reproducing kernel Hilbert spaces of entire vector valued functions, Journal of Functional Analysis, Volume 273, Issue 12 (2017), 3671-3718.
  • 3. A. Chattopadhyay, B.K.Das, J. Sarkar, S. Sarkar, Wandering subspaces of the Bergman space and the Dirichlet space over Dn, Integral Equations Operator Theory, 79 (2014), no. 4, 567-–577.
  • 2. B.K. Das, J. Sarkar, S. Sarkar, Maximal contractive tuples, Complex Analysis and Operator Theory, 8 (2014), no. 6, 1325-–1339.
  • 1. T. Bhattacharyya, B.K. Das, S. Sarkar, The defect sequence for contractive tuples, Linear Algebra Appl, 438 (2013), no. 1, 315–330.
  1. DST-INSPIRE Faculty (DST/INSPIRE/04/2016/000808) Research Grant (Rs. 35 Lakhs) from 2016 – 2021.
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