English

Weight functions, tilts, and stability conditions

Algebraic Geometry 2021-03-18 v2 Representation Theory

Abstract

In this article, we treat stability conditions in the sense of King, Bridgeland and Bayer in a single framework. Following King, we begin with weight functions on a triangulated category, and consider increasingly specialised configurations of triangulated categories, t-structures and stability functions that give equivalent categories of stable objects. Along the way, we recover existing results in representation theory and algebraic geometry, and prove a series of new results on elliptic surfaces, including correspondence theorems for Bridgeland stability conditions and polynomial stability conditions, local finiteness and boundedness for mini-walls for Bridgeland stability conditions, isomorphisms between moduli of 1-dimensional twisted Gieseker semistable sheaves and 2-dimensional Bridgeland semistable objects, the preservation of geometric Bridgeland stability by autoequivalences on elliptic surfaces of nonzero Kodaira dimension, and solutions to Gepner equations on elliptic surfaces.

Keywords

Cite

@article{arxiv.2007.06857,
  title  = {Weight functions, tilts, and stability conditions},
  author = {Jason Lo},
  journal= {arXiv preprint arXiv:2007.06857},
  year   = {2021}
}

Comments

46 pages. Slight improvement of exposition; typos corrected. The notations and preliminaries borrow substantially from arXiv:1910.02477 [math.AG]

R2 v1 2026-06-23T17:06:01.233Z