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We prove the existence of Bridgeland stability conditions on the Kuznetsov components of Gushel-Mukai varieties, and describe the structure of moduli spaces of Bridgeland semistable objects in these categories in the even-dimensional case.…

Algebraic Geometry · Mathematics 2023-05-19 Alexander Perry , Laura Pertusi , Xiaolei Zhao

We use the notion of Bridgeland stability condition and its associated metric to endow triangulated categories with extriangulated structures and study their extriangulated Grothendieck groups. This study is motivated by Khovanov-Seidel's…

Quantum Algebra · Mathematics 2025-12-19 Hoel Queffelec , Anne-Laure Thiel , Emmanuel Wagner

We propose the notion of stability on a triangulated category that is a generalization of the T.Bridgeland's stability data. We establish connections between stabilities and t-structures on a category and as application we get the…

Algebraic Geometry · Mathematics 2007-05-23 A. Gorodentscev , S. Kuleshov , A. Rudakov

Consider a 2-Calabi--Yau triangulated category with a Bridgeland stability condition. We devise an effective procedure to reduce the phase spread of an object by applying spherical twists. Using this, we give new proofs of the following…

Representation Theory · Mathematics 2021-08-23 Asilata Bapat , Anand Deopurkar , Anthony M. Licata

We discuss potential (largely speculative) applications of Bridgeland's theory of stability conditions to symplectic mapping class groups.

Symplectic Geometry · Mathematics 2017-11-15 Ivan Smith

We develop a theory of Bridgeland stability conditions and moduli spaces of semistable objects for a family of varieties. Our approach is based on and generalizes previous work by Abramovich-Polishchuk, Kuznetsov, Lieblich, and…

Algebraic Geometry · Mathematics 2022-01-26 Arend Bayer , Martí Lahoz , Emanuele Macrì , Howard Nuer , Alexander Perry , Paolo Stellari

In this paper, we investigate the relationships between Harder-Narasimhan filtrations and derived Hall algebras. We extend several results from abelian categories to triangulated categories, including Reineke inversions, wall-crossing…

Representation Theory · Mathematics 2025-12-29 Wenyu Gao , Fan Xu

We describe a connected component of the space of stability conditions on abelian threefolds, and on Calabi-Yau threefolds obtained as (the crepant resolution of) a finite quotient of an abelian threefold. Our proof includes the following…

Algebraic Geometry · Mathematics 2016-04-20 Arend Bayer , Emanuele Macrì , Paolo Stellari

Let $\mathcal{T}$ be a $k$-linear triangulated category. The space of Bridgeland stability conditions on $\mathcal{T}$, denoted by $\mathrm{Stab}(\mathcal{T})$, forms a complex manifold. In this paper, we introduce an equivalence relation…

Algebraic Geometry · Mathematics 2025-06-30 Chunyi Li

Let $X$ be a smooth complex projective variety. In 2002, Bridgeland defined a notion of stability for the objects in $D^b(X)$, the bounded derived category of coherent sheaves on $X$, which generalized the notion of slope stability for…

Algebraic Geometry · Mathematics 2018-08-28 Rebecca Tramel , Bingyu Xia

We describe the relationship between two spaces associated to a quiver with potential. The first is a complex manifold parametrizing Bridgeland stability conditions on a triangulated category, and the second is a cluster variety with a…

Algebraic Geometry · Mathematics 2019-04-30 Dylan G. L. Allegretti

The space of stability conditions on a triangulated category is naturally partitioned into subsets $U(A)$ of stability conditions with a given heart $A$. If $A$ has finite length and $n$ simple objects then $U(A)$ has a simple geometry,…

Algebraic Geometry · Mathematics 2015-03-13 Jon Woolf

The derived category of coherent systems is an interesting triangulated category associated with a smooth, projective curve $C$. These categories admit Bridgeland stability conditions, as recently shown by Feyzbakhsh and Novik. Their…

Algebraic Geometry · Mathematics 2026-02-13 Nicolás Vilches

In this paper, we deal with stable homology computations with twisted coefficients for mapping class groups of surfaces and of 3-manifolds, automorphism groups of free groups with boundaries and automorphism groups of certain right-angled…

Algebraic Topology · Mathematics 2021-08-18 Arthur Soulié

We shall study some moduli spaces of Bridgeland's semi-stable objects on abelian surfaces and K3 surfaces with Picard number 1. Under some conditions, we show that the moduli spaces are isomorphic to the moduli spaces of Gieseker…

Algebraic Geometry · Mathematics 2011-12-30 Hiroki Minamide , Shintarou Yanagida , Kota Yoshioka

We construct Bridgeland stability conditions on the derived category of smooth quasi-projective Deligne-Mumford surfaces whose coarse moduli spaces have ADE singularities. This unifies the construction for smooth surfaces and Bridgeland's…

Algebraic Geometry · Mathematics 2021-10-22 Bronson Lim , Franco Rota

A K3 category is by definition a Calabi-Yau category of dimension two. Geometrically K3 categories occur as bounded derived categories of (twisted) coherent sheaves on K3 or abelian surfaces. A K3 category is generic if there are no…

Algebraic Geometry · Mathematics 2013-09-12 Daniel Huybrechts , Emanuele Macri , Paolo Stellari

In this short note, we provide a broad class of examples of stability conditions on the category of coherent sheaves which generalise Gieseker stability. We refer to them as "adapted to coherent sheaves" and they admit Harder--Narasimhan…

Algebraic Geometry · Mathematics 2025-09-08 Rémi Delloque

Stability conditions are a mathematical way to understand $\Pi$-stability for D-branes in string theory. Spaces of stability conditions seem to be related to moduli spaces of conformal field theories. This is a survey article describing…

Algebraic Geometry · Mathematics 2007-05-23 Tom Bridgeland

We study stability conditions induced by functors between triangulated categories. Given a finite group acting on a smooth projective variety we prove that the subset of invariant stability conditions embeds as a closed submanifold into the…

Algebraic Geometry · Mathematics 2009-01-10 Emanuele Macri , Sukhendu Mehrotra , Paolo Stellari