Showing 2025Show all
2 papers · 1 filter
math.AG2025
A new phantom on a rational surface
Shihao Ma, Yirui Xiong, Song Yang
We construct a universal phantom subcategory on the blow-up of the complex projective plane at 11 general points. This phantom subcategory is the orthogonal complement of a non-ful…
math.AG2025
Quintic genus 2 curves, stable pairs and wall-crossing
Shihao Ma, Song Yang
This paper studies wall crossings in Bridgeland stability for the moduli space of Pandharipande--Thomas stable pairs associated with quintic genus 2 curves in the complex projectiv…