4 papers
Stabilization of intersection Betti numbers for moduli spaces of one-dimensional sheaves on surfaces
Fei Si, Feinuo Zhang
In this paper, we develop a unified approach to study the intersection Betti numbers of moduli spaces of one-dimensional semistable sheaves on smooth projective surfaces. Assuming…
On the Picard numbers of moduli spaces of one-dimensional sheaves on surfaces
Fei Si, Feinuo Zhang
Motivated by asymptotic phenomena of moduli spaces of higher rank stable sheaves on algebraic surfaces, we study the Picard number of the moduli space of one-dimensional stable she…
Cohomological stabilization, perverse filtrations, and refined BPS invariants for del Pezzo surfaces
Weite Pi, Junliang Shen, Fei Si +1
We prove an asymptotic product formula for the refined BPS invariants associated with a local del Pezzo surface. Our formula governs the cohomological stabilization of the perverse…
Asymptotic Behaviors of Moduli of One-dimensional Sheaves on Surfaces
Fei Si, Feinuo Zhang
In this paper, we study the asymptotic behaviors of the Betti numbers and Picard numbers of the moduli space of one-dimensional sheaves supported in a curve class …