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We present algorithms to factorize weighted homogeneous elements in the first polynomial Weyl algebra and $q$-Weyl algebra, which are both viewed as a $\mathbb{Z}$-graded rings. We show, that factorization of homogeneous polynomials can be…

符号计算 · 计算机科学 2016-02-19 Albert Heinle , Viktor Levandovskyy

A localized quantum unipotent coordinate category $\widetilde{\mathscr{C}_w}$ associated with a Weyl group element $w$ is a rigid monoidal category which is obtained by applying the localization process to a subcategory of the category of…

表示论 · 数学 2025-09-04 Masaki Kashiwara , Toshiki Nakashima

This article generalizes the correspondence between matrix factorizations and maximal Cohen-Macaulay modules over hypersurface rings due to Eisenbud and Yoshino. We consider factorizations with several factors in a purely categorical…

范畴论 · 数学 2026-05-12 Jonas Frank , Mathias Schulze

Given any matrix B in SL(2,Z), we will describe an algorithm that provides at least one elliptic fibration over the disk, relatively minimal and Lefschetz, within each topological equivalence class, whose total monodromy is the conjugacy…

代数几何 · 数学 2013-09-24 J. D. Vélez , C. Cadavid , L. Moreno

Generalizing Eisenbud's matrix factorizations, we define factorization categories. Following work of Positselski, we define their associated derived categories. We construct specific resolutions of factorizations built from a choice of…

范畴论 · 数学 2014-05-14 Matthew Ballard , Dragos Deliu , David Favero , M. Umut Isik , Ludmil Katzarkov

We construct a pairing, which we call factorization homology, between framed manifolds and higher categories. The essential geometric notion is that of a vari-framing of a stratified manifold, which is a framing on each stratum together…

代数拓扑 · 数学 2020-02-25 David Ayala , John Francis , Nick Rozenblyum

For a finite group $D$, we study categorical factorisation homology on oriented surfaces equipped with principal $D$-bundles, which `integrates' a (linear) balanced braided category $\mathcal{A}$ with $D$-action over those surfaces. For…

量子代数 · 数学 2023-05-17 Corina Keller , Lukas Müller

We study the class of all algebras that are isotopic to a Hurwitz algebra. Isomorphism classes of such algebras are shown to correspond to orbits of a certain group action. A complete, geometrically intuitive description of the category of…

环与代数 · 数学 2018-08-13 Erik Darpö

We construct an algebraic weak factorization system $(L, R)$ on the cartesian cubical sets, in which the canonical path object factorization $A \to A^I \to A\times A$ induced by the 1-cube $I$ is an $L$-$R$ factorization for any $R$-object…

范畴论 · 数学 2016-07-22 Steve Awodey

We prove a Fej\'er-Riesz type factorization for positive matrix-valued noncommutative trigonometric polynomials on $\mathscr{W}\times\mathfrak{Y}$, where $\mathscr{W}$ is either the free semigroup $\langle x \rangle_g$ or the free product…

泛函分析 · 数学 2025-12-15 Igor Klep , Jacob Levenson , Scott McCullough

We consider the canonical Wiener-Hopf factorisation of $2 \times 2$ symmetric matrices $\mathcal M$ with respect to a contour $\Gamma$. For the case that the quotient $q$ of the two diagonal elements of $\mathcal M$ is a rational function,…

泛函分析 · 数学 2026-05-08 M. Cristina Câmara , Gabriel Lopes Cardoso

In this paper we establish affinizations and R-matrices in the language of pro-objects, and as an application, we construct reflection functors over the localizations of quiver Hecke algebras of arbitrary finite types. This reflection…

表示论 · 数学 2025-05-02 Masaki Kashiwara , Myungho Kim , Se-jin Oh , Euiyong Park

We fix any bicategory $\mathscr{A}$ together with a class of morphisms $\mathbf{W}_{\mathscr{A}}$, such that there is a bicategory of fractions $\mathscr{A}[\mathbf{W}_{\mathscr{A}}^{-1}]$. Given another such pair…

范畴论 · 数学 2014-11-24 Matteo Tommasini

We prove that two reflection factorizations of a given element in an exceptional rank-2 complex reflection group of tetrahedral type are Hurwitz-equivalent if and only if they generate the same subgroup and have the same multiset of…

组合数学 · 数学 2021-10-19 Tyler Minnick , Colin Pirillo , Sarah Racile , Yueqi Wang

In this paper we study the homotopy theory of parameterized spectrum objects in the $\infty$-category of $(\infty, 2)$-categories, as well as the Quillen cohomology of an $(\infty, 2)$-category with coefficients in such a parameterized…

代数拓扑 · 数学 2018-02-23 Yonatan Harpaz , Joost Nuiten , Matan Prasma

Following the theory of principal $\infty$-bundles of Niklaus-Schreiber-Steveson, we develop a homotopy categorification of Hopf algebras, which model quantum groups. We study their higher-representation theory in the setting of…

量子代数 · 数学 2026-01-23 Hank Chen , Florian Girelli

We first prove semi-orthogonal decompositions of derived factorization categories arising from sums of potentials of gauged Landau-Ginzburg models, where the sums are not necessarily Thom--Sebastiani type. We then apply the result to the…

代数几何 · 数学 2022-09-23 Yuki Hirano , Genki Ouchi

We construct a Hochschild-Kostant-Rosenberg-type quasi-isomorphism for the negative cyclic homology of the category of global matrix factorizations on a smooth separated scheme of finite type over a field. The map is explicit enough to…

代数几何 · 数学 2021-09-30 Kuerak Chung , Bumsig Kim , Taejung Kim

Working over an algebraically closed field $k$ of any characteristic, we determine the matrix factorizations for the --- suitably graded --- triangle singularities $f=x^a+y^b+z^c$ of domestic type, that is, we assume that $(a,b,c)$ are…

表示论 · 数学 2015-07-29 Dawid Edmund Kędzierski , Helmut Lenzing , Hagen Meltzer

Let $R$ be a commutative ring. An $R$-module $M$ is called a semi-regular $w$-flat module if $\Tor_1^R(R/I,M)$ is $\GV$-torsion for any finitely generated semi-regular ideal $I$. In this article, we show that the class of semi-regular…

交换代数 · 数学 2023-03-07 Xiaolei Zhang