Nirjan Biswas
NBHM Postdoctoral Researcher · IISER Pune
Thank you for visiting my webpage! I work in the analysis of elliptic partial differential equations, with an emphasis on Hardy–Sobolev inequalities, weighted non‑linear eigenvalue problems, and non‑local operators.
Currently, I am a Post Doctoral Fellow at the Department of Mathematics, IISER Pune. Previously, I held a similar position at TIFR CAM. Prior to that, I worked as a research associate at the Department of Mathematics, IIT Madras under the supervision of Dr. T. V. Anoop. My doctoral degree was awarded on 21 September 2021.
Research Interests
- Analysis of Elliptic Partial Differential Equations
- Study of weighted non‑linear eigenvalue problems
- Hardy–Sobolev inequalities with admissible function spaces
- Optimization of the first Dirichlet eigenvalue over rearrangement‑invariant classes and under domain perturbations
- Positivity of solutions on the entire RN for elliptic equations with semipositone nonlinearity
- Spectrum analysis for double‑phase non‑linear fractional problems
- Regularity theory for non‑local and mixed local non‑local elliptic equations
- Bifurcation theory for nonlinear elliptic eigenvalue problems
Find my works on
Contact Details
Office
Room No. 402
Department of Mathematics,
IISER Pune, Pune 411008, India
Department of Mathematics,
IISER Pune, Pune 411008, India
Phone
(+91) 7003 044 088
Academic Timeline
- 2009 Jul – 2012 JulBachelor of Science from Scottish Church College, Kolkata
- 2012 Jul – 2014 JulMaster of Science from University of Calcutta (Rajabazar Science College)
- 2015 Aug – 2021 JulResearch Scholar at Indian Institute of Technology Madras
- 2021 Jul – 2021 SepVisiting Researcher at Indian Institute of Technology Jodhpur
- 2022 Feb – 2024 FebPostdoctoral Researcher at TIFR Center for Applicable Mathematics
- 2024 Feb – 2025 AprNPDF SERB Postdoctoral Researcher at IISER Pune
- 2025 May – NowNBHM Postdoctoral Researcher at IISER Pune