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The scope of the paper is threefold. First, we build on recent work by Hayden to compute Hedden's tau-invariant $\tau_{\xi}(L)$ in the case when $\xi$ is a Stein fillable contact structure on a rational homology sphere, and $L$ is a…

Geometric Topology · Mathematics 2025-11-19 Antonio Alfieri , Alberto Cavallo

We present results indicating that the decomposition of a Ricci-flat manifold in its irreducible factors is reflected by the derived category of coherent sheaves. More precisely, we prove that a smooth projective variety that is derived…

Algebraic Geometry · Mathematics 2008-01-31 Daniel Huybrechts , Marc Nieper-Wisskirchen

For a pair of affine toric varieties X and Y defined by dual cones, we define an equivalence between two triangulated categories. The first is a mixed version of the equivariant derived category of X and the second is a mixed version of the…

Algebraic Geometry · Mathematics 2007-05-23 Tom Braden , Valery A. Lunts

The nonabelian Hodge correspondence for vector bundles over noncompact curves is adequately described by implementing a weighted filtration on the objects involved. In order to establish a full correspondence between a Dolbeault and a de…

Algebraic Geometry · Mathematics 2023-03-21 Pengfei Huang , Georgios Kydonakis , Hao Sun , Lutian Zhao

We introduce a theory of stratifications of noncommutative stacks (i.e. presentable stable $\infty$-categories), and we prove a reconstruction theorem that expresses them in terms of their strata and gluing data. This reconstruction theorem…

Algebraic Geometry · Mathematics 2023-11-10 David Ayala , Aaron Mazel-Gee , Nick Rozenblyum

Recently, Cao-Maulik-Toda defined stable pair invariants of a compact Calabi-Yau 4-fold $X$. Their invariants are conjecturally related to the Gopakumar-Vafa type invariants of $X$ defined using Gromov-Witten theory by Klemm-Pandharipande.…

Algebraic Geometry · Mathematics 2020-08-18 Yalong Cao , Martijn Kool

This paper forms part of a larger work where we prove a conjecture of Deser and Schwimmer regarding the algebraic structure of "global conformal invariants"; these are defined to be conformally invariant integrals of geometric scalars. The…

Differential Geometry · Mathematics 2011-03-01 Spyros Alexakis

We show that the conformal blocks constructed in the previous article by the first and the third author may be described as certain integrals in equivariant cohomology. When the bundles of conformal blocks have rank one, this construction…

Mathematical Physics · Physics 2011-02-22 R. Rimányi , V. Schechtman , A. Varchenko

In this paper, we first study the Gorenstein projective/flat dimension of complexes of modules. The relation between the Gorenstein projective/flat dimension for complexes and that for modules are investigated. Then we study Tate, stable…

Rings and Algebras · Mathematics 2020-09-18 Li Liang

Let $G$ be a connected reductive algebraic group over an algebraically closed field $\Bbbk$ of characteristic $p \ge 0$, and let $\mathcal{N}$ be its nilpotent cone. Under mild hypotheses, we construct for each nilpotent $G$-orbit $C$ and…

Representation Theory · Mathematics 2022-03-10 Pramod N. Achar , William Hardesty

This is the second paper in a series on enumerative invariants counting self-dual objects in self-dual categories, and is a sequal to (arXiv:2302.00038). Ordinary enumerative invariants in abelian categories can be seen as invariants for…

Algebraic Geometry · Mathematics 2023-09-12 Chenjing Bu

FJRW theory is a formulation of physical Landau-Ginzburg models with a rich algebraic structure, rooted in enumerative geometry. As a consequence of a major physical conjecture, called the Landau-Ginzburg/Calabi-Yau correspondence, several…

Algebraic Geometry · Mathematics 2019-11-13 Amanda Francis , Nathan Priddis , Andrew Schaug

We study two classes of morphisms in infinite type: tamely presented morphisms and morphisms with coherent pullback. These are generalizations of finitely presented morphisms and morphisms of finite Tor-dimension, respectively. The class of…

Algebraic Geometry · Mathematics 2024-01-11 Sabin Cautis , Harold Williams

We give a complete answer to the question of (semi)stability of tangent bundle of any nonsingular projective complex toric variety with Picard number 2 by using combinatorial crietrion of (semi)stability of an equivariant sheaf. We also…

Algebraic Geometry · Mathematics 2019-10-31 Jyoti Dasgupta , Arijit Dey , Bivas Khan

The twist-deformed conformal algebra is constructed as a Hopf algebra with twisted co-product. This allows for the definition of conformal symmetry in a non-commutative background geometry. The twisted co-product is reviewed for the…

High Energy Physics - Theory · Physics 2009-11-11 Peter Matlock

The Remodeling Conjecture proposed by Bouchard-Klemm-Marino-Pasquetti [arXiv:0709.1453, arXiv:0807.0597] relates all genus open and closed Gromov-Witten invariants of a semi-projective toric Calabi-Yau 3-manifolds/3-orbifolds to the…

Algebraic Geometry · Mathematics 2020-01-28 Bohan Fang , Chiu-Chu Melissa Liu , Zhengyu Zong

We construct an $A_{\infty}$-structure on the Ext-groups of hermitian holomorphic vector bundles on a compact complex manifold. We propose a generalization of the homological mirror conjecture due to Kontsevich. Namely, we conjecture that…

Algebraic Geometry · Mathematics 2007-05-23 Alexander Polishchuk

We formulate a Crepant Resolution Correspondence for open Gromov-Witten invariants (OCRC) of toric Calabi-Yau orbifolds by viewing the open theories as sections of Givental's symplectic vector space and the correspondence as a linear map of…

Algebraic Geometry · Mathematics 2014-04-15 Andrea Brini , Renzo Cavalieri , Dustin Ross

We study unramified unitary and unitary similitude groups in an odd number of variables. Using work of the first and third named authors on the Kottwitz Conjecture for the similitude groups, we show that the Fargues--Scholze local Langlands…

Number Theory · Mathematics 2024-04-22 Alexander Bertoloni Meli , Linus Hamann , Kieu Hieu Nguyen

We introduce a holomorphic version of Weinstein's symplectic category, in which objects are holomorphic symplectic manifolds, and morphisms are holomorphic lagrangian correspondences. We then extend this category to log schemes, and prove…

Algebraic Geometry · Mathematics 2025-06-26 Brett Parker
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