English

Total stability functions for type $\mathbb{A}$ quivers

Representation Theory 2020-11-05 v2 Combinatorics

Abstract

For a quiver QQ of Dynkin type An\mathbb{A}_n, we give a set of n1n-1 inequalities which are necessary and sufficient for a linear stability condition (a.k.a. central charge) Z ⁣:K0(Q)CZ\colon K_0(Q) \to \mathbb{C} to make all indecomposable representations stable. We furthermore show that these are a minimal set of inequalities defining the space TS(Q)\mathcal{TS}(Q) of total stability conditions, considered as an open subset of RQ0×(R>0)Q0\mathbb{R}^{Q_0} \times (\mathbb{R}_{>0})^{Q_0}. We then use these inequalities to show that each fiber of the projection of TS(Q)\mathcal{TS}(Q) to (R>0)Q0(\mathbb{R}_{>0})^{Q_0} is linearly equivalent to R×R>0Q1\mathbb{R} \times \mathbb{R}_{>0}^{Q_1}.

Keywords

Cite

@article{arxiv.2002.12396,
  title  = {Total stability functions for type $\mathbb{A}$ quivers},
  author = {Ryan Kinser},
  journal= {arXiv preprint arXiv:2002.12396},
  year   = {2020}
}

Comments

11 pages. v2: totally rewritten in terms of Bridgeland stability conditions instead of classical slope function

R2 v1 2026-06-23T13:56:49.128Z