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We prove the Landau-Ginzburg Mirror Symmetry Conjecture at the level of (orbifolded) Frobenius algebras for a large class of invertible singularities, including arbitrary sums of loops and Fermats with arbitrary symmetry groups.…

Algebraic Geometry · Mathematics 2011-11-11 Amanda Francis , Tyler Jarvis , Drew Johnson , Rachel Suggs

We introduce and motivate -- based on ongoing joint work with Germ\'an Stefanich -- the notion of potent categorical representations of a complex reductive group $G$, specifically a conjectural Langlands correspondence identifying potent…

Representation Theory · Mathematics 2025-10-13 David Ben-Zvi , David Nadler

We study support $\tau$-tilting modules over preprojective algebras of Dynkin type. We classify basic support $\tau$-tilting modules by giving a bijection with elements in the corresponding Weyl groups. Moreover we show that they are in…

Representation Theory · Mathematics 2013-12-04 Yuya Mizuno

Let $R$ be the homogeneous coordinate ring of the Grassmannian $\mathbb{G}=Gr(2,n)$ defined over an algebraically closed field $k$ of characteristic $p \geq \max\{n-2,3\}$. In this paper we give a description of the decomposition of $R$,…

Algebraic Geometry · Mathematics 2019-01-31 Theo Raedschelders , Špela Špenko , Michel Van den Bergh

We introduce a global Landau-Ginzburg model which is mirror to several toric Deligne-Mumford stacks and describe the change of the Gromov-Witten theories under discrepant transformations. We prove a formal decomposition of the quantum…

Algebraic Geometry · Mathematics 2020-04-23 Hiroshi Iritani

We study versions of homological mirror symmetry for hypersurface cusp singularities and the three hypersurface simple elliptic singularities. We show that the Milnor fibres of each of these carries a distinguished Lefschetz fibration; its…

Symplectic Geometry · Mathematics 2017-05-29 Ailsa Keating

Over a noetherian ring, it is a classic result of Matlis that injective modules admit direct sum decompositions into injective hulls of quotients by prime ideals. We show that over a Cohen-Macaulay ring admitting a dualizing module,…

Commutative Algebra · Mathematics 2015-05-05 Aaron J. Feickert , Sean Sather-Wagstaff

We build the wrapped Fukaya category W(E) for any monotone symplectic manifold, convex at infinity. We define the open-closed and closed open-string maps. We study their algebraic properties and prove that the string maps are compatible…

Symplectic Geometry · Mathematics 2016-09-22 Alexander F. Ritter , Ivan Smith

Given a log Calabi-Yau surface $Y$ with maximal boundary $D$ and distinguished complex structure, we explain how to construct a mirror Lefschetz fibration $w: M \to \mathbb{C}$, where $M$ is a Weinstein four-manifold, such that the directed…

Symplectic Geometry · Mathematics 2025-06-09 Paul Hacking , Ailsa Keating , Wendelin Lutz

We formulate a constructive theory of noncommutative Landau-Ginzburg models mirror to symplectic manifolds based on Lagrangian Floer theory. The construction comes with a natural functor from the Fukaya category to the category of matrix…

Algebraic Geometry · Mathematics 2021-09-07 Cheol-Hyun Cho , Hansol Hong , Siu-Cheong Lau

We derive Fredholm determinant representation for isomonodromic tau functions of Fuchsian systems with $n$ regular singular points on the Riemann sphere and generic monodromy in $\mathrm{GL}(N,\mathbb C)$. The corresponding operator acts in…

Mathematical Physics · Physics 2018-10-30 P. Gavrylenko , O. Lisovyy

We prove that the inclusion of every closed exact Lagrangian with vanishing Maslov class in a cotangent bundle is a homotopy equivalence. We start by adapting an idea of Fukaya-Seidel-Smith to prove that such a Lagrangian is equivalent to…

Symplectic Geometry · Mathematics 2011-10-18 Mohammed Abouzaid

We compute the ring structure of Floer cohomology groups of Lagrangian torus fibers in some toric Fano manifolds continuing the study of \cite{CO}. Related $\AI$-formulas hold for transversal choice of chains. Two different computations are…

Symplectic Geometry · Mathematics 2016-09-07 Cheol-Hyun Cho

In this note we describe a seemingly new approach to the complex representation theory of the wreath product $G\wr S_d$ where $G$ is a finite abelian group. The approach is motivated by an appropriate version of Schur-Weyl duality. We…

Representation Theory · Mathematics 2017-05-10 Volodymyr Mazorchuk , Catharina Stroppel

Let $X$ be a complete toric variety equipped with the action of a torus $T$ and $G$ a reductive algebraic group, defined over an algebraically closed field $K$. We introduce the notion of a compatible $\Sigma$--filtered algebra associated…

Algebraic Geometry · Mathematics 2019-07-09 Indranil Biswas , Arijit Dey , Mainak Poddar

We study a class of Lagrangian submanifolds, given by sections of a special Lagrangian fibration, contained in certain almost Calabi-Yau threefolds (mirrors of polarised toric threefolds satisfying suitable assumptions). We show that, for a…

Algebraic Geometry · Mathematics 2025-08-26 Jacopo Stoppa

We discuss homological mirror symmetry for Rabinowitz Fukaya categories of Milnor fibers of invertible polynomials, and prove it for Brieskorn-Pham polynomials which are not of Calabi-Yau type. This allows a calculation of the Rabinowitz…

Algebraic Geometry · Mathematics 2024-06-25 Yanki Lekili , Kazushi Ueda

Given a monotone Lagrangian $L$ in a compact symplectic manifold $X$, we construct a commutative diagram relating the closed-open string map $\mathcal{CO}_\lambda \colon \operatorname{QH}^*(X) \to \operatorname{HH}^*(\mathcal{F}…

Symplectic Geometry · Mathematics 2026-02-12 Jack Smith

We prove a version of homological mirror symmetry statement for toric Calabi-Yau $3$-orbifolds, thus extending arXiv:1604.06448 to the case of orbifolds under the mirror symmetry setting considered in arXiv:1604.07123. The B-model is the…

Algebraic Topology · Mathematics 2022-04-27 Qingyuan Bai , Bohan Fang

Consider a Frobenius kernel G in a split semisimple algebraic group, in very good characteristic. We provide an analysis of support for the Drinfeld center Z(rep(G)) of the representation category for G, or equivalently for the…

Representation Theory · Mathematics 2023-02-22 Eric M. Friedlander , Cris Negron