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We consider a version of the relative Fukaya category for anticanonical Lefschetz pencils. There are direct connections between the behaviour of this category and enumerative geometry: some of these are results announced here, others remain…

Symplectic Geometry · Mathematics 2015-11-13 Paul Seidel

We give a purely cubical argument for the localization theorem for the cubical version of higher Chow groups.

Algebraic Geometry · Mathematics 2021-12-28 Jinhyun Park

We prove that, in a triangulated category with combinatorial models, every localizing subcategory is coreflective and every colocalizing subcategory is reflective if a certain large-cardinal axiom (Vopenka's principle) is assumed true. It…

Category Theory · Mathematics 2013-12-10 Carles Casacuberta , Javier J. Gutiérrez , Jiří Rosický

In this paper, we prove the categorical wall-crossing formula for certain quivers containing the three loop quiver, which we call DT/PT quivers. These quivers appear as Ext-quivers for the wall-crossing of DT/PT moduli spaces on Calabi-Yau…

Algebraic Geometry · Mathematics 2022-11-23 Tudor Pădurariu , Yukinobu Toda

In one of our previous articles, we outlined the formulation of a version of the categorical arithmetic local Langlands conjecture. The aims of this article are threefold. First, we provide a detailed account of one component of this…

Representation Theory · Mathematics 2025-04-11 Xinwen Zhu

We lower substantially the strength of the assumptions needed for the validity of certain results in category theory and homotopy theory which were known to follow from Vopenka's principle. We prove that the necessary large-cardinal…

Category Theory · Mathematics 2012-12-04 Joan Bagaria , Carles Casacuberta , A. R. D. Mathias , Jiri Rosicky

We introduce some new Frobenius subcategories of the module category of a preprojective algebra of Dynkin type, and we show that they have a cluster structure in the sense of Buan-Iyama-Reiten-Scott. These categorical cluster structures…

Representation Theory · Mathematics 2015-01-06 Bernard Leclerc

A new categorical setting is defined in order to characterize the subrecursive classes belonging to complexity hierarchies. This is achieved by means of coercion functors over a symmetric monoidal category endowed with certain recursion…

Category Theory · Mathematics 2015-01-29 Joaquín Díaz Boils

We construct the cyclic open--closed map for the big (i.e., bulk-deformed) relative Fukaya category, in the semipositive case, and show that it is a morphism of `polarized variations of semi-infinite Hodge structures'. We also give a…

Algebraic Geometry · Mathematics 2025-11-07 Sheel Ganatra , Nick Sheridan

For a symplectic manifold satisfying some topological condition,we define a special class of modules over the deformation quantization algebra. For any two such modules we construct an infinity local system of morphisms. We construct such…

K-Theory and Homology · Mathematics 2019-05-17 Boris Tsygan

Let $X$ be a real analytic manifold, and let $T^*X$ be its cotangent bundle. In a recent paper with E. Zaslow \cite{NZ}, we showed that the dg category $Sh_c(X)$ of constructible sheaves on $X$ quasi-embeds into the triangulated envelope…

Symplectic Geometry · Mathematics 2009-02-12 David Nadler

We provide a complete classification of the possible cofinal structures of the families of precompact (totally bounded) sets in general metric spaces, and compact sets in general complete metric spaces. Using this classification, we…

General Topology · Mathematics 2017-01-04 Aviv Eshed , M. Vincenta Ferrer , Salvador Hernández , Piotr Szewczak , Boaz Tsaban

We give a complete description of partially wrapped Fukaya categories of graded orbifold surfaces with stops. We show that a construction via global sections of a natural cosheaf of A$_\infty$ categories on a Lagrangian core of the surface…

Symplectic Geometry · Mathematics 2024-07-24 Severin Barmeier , Sibylle Schroll , Zhengfang Wang

We prove homological mirror symmetry for projective hypersurfaces of sufficiently high degree using a functor from the wrapped Fukaya category of an affine hypersurface to the Fukaya category of its boundary at infinity.

Symplectic Geometry · Mathematics 2025-05-05 Kazushi Ueda

We introduce relative noncommutative Calabi-Yau structures defined on functors of differential graded categories. Examples arise in various contexts such as topology, algebraic geometry, and representation theory. Our main result is a…

Algebraic Geometry · Mathematics 2019-02-20 Christopher Brav , Tobias Dyckerhoff

We establish a large class of homotopy coherent Morita-equivalences of Dold-Kan type relating diagrams with values in any weakly idempotent complete additive $\infty$-category; the guiding example is an $\infty$-categorical Dold-Kan…

Representation Theory · Mathematics 2022-03-18 Tashi Walde

Let $\cA$ be a locally coherent Grothendieck category, $\fp\cA$ be the full subcategory of $\cA$ consisting of finitely presented objects and $\ASpec\cA$ be the atom spectrum of $\cA$. In this paper, we classify localizing subcategories of…

Category Theory · Mathematics 2025-11-26 Reza Sazeedeh

We give a summary (without proofs) of the main results in the author's thesis entitled ``Construction of biclosed categories'' (University of New South Wales, Australia, 1970). This summary is reprinted directly from Report 81-0030 of the…

Category Theory · Mathematics 2007-05-25 Brian J. Day

We study Ginzburg dg algebras which appear at the intersection of representation theory and symplectic topology. First, we provide a collection of proper modules that generates all proper modules over a Ginzburg dg algebra, without assuming…

Symplectic Geometry · Mathematics 2026-05-12 Wonbo Jeong , Dogancan Karabas , Sangjin Lee

Using the theta correspondence, we extend the classification of irreducible representations of quasi-split unitary groups (the so-called local Langlands correspondence, which was established in an early paper of Mok) to non quasi-split…

Representation Theory · Mathematics 2021-10-12 Rui Chen , Jialiang Zou