Research

by categories in reversed chronological order.

2026

  1. TAMS26
    On the Picard numbers of moduli spaces of one-dimensional sheaves on surfaces
    Fei Si, and Feinuo Zhang
    Trans. Amer. Math. Soc., 2026
    electronically published on January 28, 2026
    DOI arXiv

2025

  1. Preprint
    Stabilization of intersection Betti numbers for moduli spaces of one-dimensional sheaves on surfaces
    Fei Si, and Feinuo Zhang
    2025
    arXiv:2511.18426
    arXiv

2024

  1. Preprint
    Asymptotic behaviors of moduli of one-dimensional sheaves on surfaces
    Fei Si, and Feinuo Zhang
    2024
    arXiv:2406.11512. This is split into two parts which are superseded by arXiv:2406.10004 and arXiv:2503.06153 respectively.
    arXiv
  2. Preprint
    Cohomological stabilization, perverse filtrations, and refined BPS invariants for del Pezzo surfaces
    Weite Pi, Junliang Shen, Fei Si, and Feinuo Zhang
    2024
    arXiv:2406.10004
    arXiv