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We strengthen a conjecture by the author. This conjecture is a Bogomolov-Gieseker type inequality involving the third Chern character of mixed tilt-stable complexes on fibred threefolds. We extend it from complexes of mixed tilt-slope zero…

Algebraic Geometry · Mathematics 2022-06-22 Hao Max Sun

We construct new t-structures on the derived category of coherent sheaves on smooth projective threefolds. We conjecture that they give Bridgeland stability conditions near the large volume limit. We show that this conjecture is equivalent…

Algebraic Geometry · Mathematics 2012-06-28 Arend Bayer , Emanuele Macri , Yukinobu Toda

We prove the Bogomolov-Gieseker type inequality conjectured by Bayer, Macri and Toda for some products of three curves. This gives the first examples of Bridgeland stability conditions on some threefolds of general type. The key ingredients…

Algebraic Geometry · Mathematics 2020-06-02 Hao Sun

In this paper, we prove the Bogomolov-Gieseker type inequality conjecture for threefolds with nef tangent bundles. As a corollary, there exist Bridgeland stability conditions on these threefolds.

Algebraic Geometry · Mathematics 2020-07-28 Naoki Koseki

We develop a framework to modify the Bogomolov-Gieseker type inequality conjecture introduced by Bayer-Macri-Toda, in order to construct a family of geometric Bridgeland stability conditions on any smooth projective 3-fold. We show that it…

Algebraic Geometry · Mathematics 2017-05-12 Dulip Piyaratne

We modify the conjectural Bogomolov-Gieseker type inequality introduced by Bayer, Macri and Toda to construct a family of geometric Bridgeland stability conditions on smooth projective 3-folds. We give an equivalent conjecture which needs…

Algebraic Geometry · Mathematics 2017-05-12 Dulip Piyaratne

We prove the Bogomolov-Gieseker type inequality conjectured by Bayer, Macri and Toda for threefolds with semistable tangent bundles and vanishing Chern classes in any characteristic, which was originally proved by Bayer, Macri and Stellari…

Algebraic Geometry · Mathematics 2021-04-13 Hao Max Sun

In this paper, we prove BG-type inequality conjecture for threefolds in the title. In particular, there exist Bridgeland stability conditions on these threefolds.

Algebraic Geometry · Mathematics 2020-07-28 Naoki Koseki

We show the existence of Bridgeland stability conditions on all Fano threefolds, by proving a modified version of a conjecture by Bayer, Toda, and the second author. The key technical ingredient is a strong Bogomolov inequality, proved…

Algebraic Geometry · Mathematics 2023-06-22 Marcello Bernardara , Emanuele Macrì , Benjamin Schmidt , Xiaolei Zhao

We show that the conjectural construction proposed by Bayer, Bertram, Macr\'i and Toda gives rise to Bridgeland stability conditions for a principally polarized abelian three-fold with Picard rank one by proving that tilt stable objects…

Algebraic Geometry · Mathematics 2015-11-24 Antony Maciocia , Dulip Piyaratne

We prove a generalized Bogomolov-Gieseker inequality as conjectured by Bayer, Macr\`i and Toda for the smooth quadric threefold. This implies the existence of a family of Bridgeland stability conditions.

Algebraic Geometry · Mathematics 2015-03-09 Benjamin Schmidt

We prove the conjectural Bogomolov-Gieseker type inequality for tilt slope stable objects on each Fano threefold X of Picard number one. Based on the previous works on Bridgeland stability conditions, this induces an open subset of…

Algebraic Geometry · Mathematics 2016-02-15 Chunyi Li

We propose a conjectural stronger version of Bogomolov-Gieseker inequality for stable sheaves on quintic 3-folds. Our conjecture is derived from an attempt to construct a Bridgeland stability condition on graded matrix factorizations, which…

Algebraic Geometry · Mathematics 2013-05-08 Yukinobu Toda

We realize explicit symmetries of Bridgeland stability conditions on any abelian threefold given by Fourier-Mukai transforms. In particular, we extend the previous joint work with Maciocia to study the slope and tilt stabilities of sheaves…

Algebraic Geometry · Mathematics 2017-09-28 Dulip Piyaratne

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 establish a stronger Bogomolov--Gieseker type inequality for slope-semistable sheaves on the smooth quintic threefold. Our approach combines a refined restriction theorem for tilt-stable objects with explicit Clifford-type bounds for…

Algebraic Geometry · Mathematics 2026-01-06 Chunkai Xu

We prove a version of the Bogomolov-Gieseker inequality on smooth projective surfaces of general type in positive characteristic, which is stronger than the result by Langer when the ranks of vector bundles are sufficiently large. Our…

Algebraic Geometry · Mathematics 2020-08-31 Naoki Koseki

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

We investigate the tilt-stability of stable sheaves on projective varieties with respect to certain tilt-stability conditions depends on two parameters constructed by Bridgeland. For a stable sheaf, we give effective bounds of these…

Algebraic Geometry · Mathematics 2021-04-13 Hao Max Sun

We show that the construction of Bayer, Bertram, Macri and Toda gives rise to a Bridgeland stability condition on a principally polarized abelian threefold with Picard rank one by establishing their conjectural generalized…

Algebraic Geometry · Mathematics 2015-03-09 Antony Maciocia , Dulip Piyaratne
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