English
Related papers

Related papers: Some examples of tilt-stable objects on threefolds

200 papers

We prove uniform boundedness statements for semistable pure sheaves on projective manifolds. For example, we prove that the set of isomorphism classes of pure sheaves of dimension 2 that are slope semistable with respect to ample classes…

Algebraic Geometry · Mathematics 2024-03-20 Mihai Pavel , Julius Ross , Matei Toma

For each $0<\alpha<\frac{1}{2}$, there exists a Bayer--Lahoz--Macr{\`{\i}}--Stellari inducing Bridgeland stability condition $\sigma(\alpha)$ on a Kuznetsov component $\mathrm{Ku}(Q)$ of the smooth quadric threefold $Q$. We obtain the…

Algebraic Geometry · Mathematics 2025-05-13 Song Yang

After establishing suitable notions of stability and Chern classes for singular pairs, we use K\"ahler-Einstein metrics with conical and cuspidal singularities to prove the slope semistability of orbifold tangent sheaves of minimal…

Algebraic Geometry · Mathematics 2022-11-09 Henri Guenancia , Behrouz Taji

We study stability conditions on the derived categories of coherent sheaves on some projective varieties. We give a complete description of the stability manifold for smooth projective curves and we examine a connected open subset of the…

Algebraic Geometry · Mathematics 2007-05-23 Emanuele Macri

Fix a Chern character of a stable sheaf on the plane. Assume either the rank is at most 6 or the rank and first Chern class are coprime and the discriminant is sufficiently large. We use recent results of Bayer and Macri on Bridgeland…

Algebraic Geometry · Mathematics 2014-09-22 Izzet Coskun , Jack Huizenga

On a Weierstra{\ss} elliptic surface $X$, we define a `limit' of Bridgeland stability conditions, denoted as $Z^l$-stability, by moving the polarisation towards the fiber direction in the ample cone while keeping the volume of the…

Algebraic Geometry · Mathematics 2021-02-12 Wanmin Liu , Jason Lo , Cristian Martinez

Let S be a smooth projective surface, K be the canonical class of S and H be an ample divisor such that H.K<0 . In this paper we prove that for any rigid (Ext^1(F,F)=0) semistable sheaf F in the sense of Mumford--Takemoto stability w.r.t. H…

alg-geom · Mathematics 2008-02-03 Boris V. Karpov

Categorical resolutions of singularities are a replacement of resolution of singularities within the realm of triangulated categories. They allow the study of the derived category of a singular variety $X$ via a triangulated category that…

Algebraic Geometry · Mathematics 2025-12-05 Nicolás Vilches

We show that any extremal contraction from a smooth projective variety with dimension less than or equal to three appears as a moduli space of (semi)stable objects in the derived category of coherent sheaves.

Algebraic Geometry · Mathematics 2012-04-04 Yukinobu Toda

Let $X$ be a smooth projective variety over $\mathbb C$. In this paper, we prove that $\mathrm{D}^b(X)$, the bounded derived category of coherent sheaves on $X$, always admits stability conditions in the sense of Bridgeland.

Algebraic Geometry · Mathematics 2026-02-02 Chunyi Li

These are notes of a course given at the 'school on moduli spaces' at the Newton Institute in January 2011. The abstract theory of stability conditions (due to Bridgeland and Douglas) on abelian and triangulated categories is developed via…

Algebraic Geometry · Mathematics 2012-10-26 Daniel Huybrechts

We study the Clifford type inequality for a particular type of curves $C_{2,2,5}$, which are contained in smooth quintic threefolds. This allows us to prove some stronger Bogomolov-Gieseker type inequalities for Chern characters of stable…

Algebraic Geometry · Mathematics 2019-10-02 Chunyi Li

We define and study a gluing procedure for Bridgeland stability conditions in the situation when a triangulated category has a semiorthogonal decomposition. As an application we construct stability conditions on the derived categories of…

Algebraic Geometry · Mathematics 2010-05-17 John Collins , Alexander Polishchuk

We show a stability-type theorem for foliations on projective spaces which arise as pullbacks of foliations with a split tangent sheaf on weighted projective spaces. As a consequence, we will be able to construct many irreducible components…

Algebraic Geometry · Mathematics 2025-01-14 Javier Gargiulo Acea , Ariel Molinuevo , Federico Quallbrunn , Sebastián Lucas Velazquez

We generalize the framework of tilt-stability to singular schemes and formulate the generalized Bogomolov-Gieseker inequality conjecture of Bayer-Macr\`i-Toda for singular threefolds. We also develop relative versions of these…

Algebraic Geometry · Mathematics 2026-05-14 Zhiyu Liu , Tianle Mao

We consider Bridgeland stability conditions for three-folds conjectured by Bayer-Macr\`i-Toda in the case of Picard rank one. We study the differential geometry of numerical walls, characterizing when they are bounded, discussing possible…

Algebraic Geometry · Mathematics 2026-01-07 Marcos Jardim , Antony Maciocia

We survey some aspects of stability conditions both in general and on the derived category of coherent sheaves on a surface, with applications to the birational geometry of certain holomorphic symplectic varieties.

Algebraic Geometry · Mathematics 2019-01-11 François Charles

We classify (semi)stable sheaves on a rational curve with one node. The results are based on the classification of indecomposable torsion-free sheaves due to Drozd and Greuel "Tame and wild projective curves and classification of vector…

Algebraic Geometry · Mathematics 2007-05-23 Sergey Mozgovoy

We investigate a semi-continuity property for stability conditions for sheaves that is important for the problem of variation of the moduli spaces as the stability condition changes. We place this in the context of a notion of stability…

Algebraic Geometry · Mathematics 2019-06-28 Daniel Greb , Julius Ross , Matei Toma

We study a class of semistability conditions defined by a system of ample classes for coherent sheaves over a smooth projective variety. Under some necessary boundedness assumptions, we show the existence of a well-behaved chamber structure…

Algebraic Geometry · Mathematics 2024-02-19 Damien Mégy , Mihai Pavel , Matei Toma