About me

I am a Professor in the Mathematics Department of the Simon Fraser University. My research area is PDE and applied analysis with the main focus on the kinetic theory. This includes the analysis of kinetic equations, inverse problems related to kinetic equations and related ones, as well as numerical analysis of kinetic equations.

I also enjoy working with researchers in other disciplines and providing mathematical tech support. Recently, I have become interested in AI-for-Math and have started working with computer scientists (the DeLTA Lab led by Professor Wuyang Chen at SFU) on LLMs for applied math.

News

• Recruiting : Prof. Wuyang Chen and I are seeking graudate students with a strong background in PDE analysis to work with us on the formalization of PDEs.

• Our PDE Formalization Page Is Now Live!

  Check out the “Formalization” tab for details. We closely follow the textbook

  Partial Differential Equations: A First Course, R. Choksi, AMS, 2022.

• LEAN Finder

  Check out LEAN Finder, our search engine for semantic search for Mathlib that understands user intents.

• New preprint (Dec 2025) :

  Uniqueness for the Homogeneous Landau-Coulomb Equation in L^{3/2}

  M.P. Gualdani and W. Sun, arXiv:2512.20899, 2025.

• Just accepted (Oct 2025) :

  The $\mathcal{M}$-Operator and Uniqueness of Nonlinear Kinetic Equations

  R. Alonso, M.P. Gualdani and W. Sun, Pure and Applied Functional Analysis, Special Issue on PDE and Applied Mathematics dedicated to Professor Peter Constantin on the occasion of his 75th Birthday, 2025.

• Congratulations to Kye Emond!

  Kye just won the Governor General’s Silver Medal, awarded to the two undergraduate students who achieve the highest scholastic standing upon graduation from a bachelor’s degree program. (See the announcement here)

• Just accepted (May 2025) :

  PDE-Controller: LLMs for Autoformalization and Reasoning of PDEs

  M. Soroco, J. Song, M. Xia, K. Emond, W. Sun and W. Chen, accepted, ICML, 2025.

• Just submitted (Jan 2025):

  Crossover from ballistic transport to normal diffusion: a kinetic view

  Z. Xue, W. Sun, Z. Zhou and M. Tang, submitted, 2025.

• Just published:

  Uniform error estimate of an asymptotic preserving scheme for the Levy-Fokker-Planck equation W. Sun and L. Wang, Math. Comp. 94, 681-725, 2025. arXiv Link

Upcoming trips

• June 16-19 2026: 10th Pacific Rim Conference of Mathematics, NTU, Taipei

• August 16-21 2026: Recent Breakthroughs and New Perspectives on the Interplay between Fluid Mechanics and Kinetic Theory, Banff, AB, Canada

Feature image: Sunset outside the SFU Math department