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We prove an adjoint functor theorem in the setting of categories enriched in a monoidal model category $\mathcal V$ admitting certain limits. When $\mathcal V$ is equipped with the trivial model structure this recaptures the enriched…

Category Theory · Mathematics 2022-12-13 John Bourke , Stephen Lack , Lukáš Vokřínek

In this short note we show that E-infinity quasi-categories can be replaced by strictly commutative objects in the larger category of diagrams of simplicial sets indexed by finite sets and injections. This complements earlier work on…

Algebraic Topology · Mathematics 2015-04-13 Dimitar Kodjabachev , Steffen Sagave

We investigate functionals defined on manifolds through parameterizations. If they are to be meaningful, from a geometrical viewpoint, they ought to be invariant under reparameterizations. Standard, local, integral functionals with this…

Differential Geometry · Mathematics 2024-11-08 Pablo Pedregal

Suppose $E$ is an end of an irreducible, properly convex, real-projective $n$-manifold $M$. If $\pi_1E$ contains a subgroup of finite index isomorphic to ${\mathbb Z}^{n-1}$, and $E\hookrightarrow M$ is $\pi_1$-injective, then $E$ is a…

Geometric Topology · Mathematics 2020-09-15 Daryl Cooper , Stephan Tillmann

We prove the Categorified Wrapping Number Conjecture for large classes of annular links, including alternating annular links and tangle closures exhibiting plumbed link phenomena. We do so by characterizing when a resolution is sufficient…

Geometric Topology · Mathematics 2025-01-07 Benjamin Daniels , Melissa Zhang

We consider the smallest triangulated subcategory of the unbounded derived module category of a ring that contains the injective modules and is closed under set indexed coproducts. If this subcategory is the entire derived category, then we…

Representation Theory · Mathematics 2020-11-03 Charley Cummings

This paper is part of a project that aims to give a homotopy cousin of Kelly's treatment of enriched category theory. After introducing unital co-Segal M-categories, we establish the unital version of a previous theorem that was proven for…

Category Theory · Mathematics 2013-12-31 Hugo V. Bacard

For any ring $A$ and a small, preadditive, Hom-finite, and locally bounded category $Q$ that has a Serre functor and satisfies the (strong) retraction property, we show that the category of additive functors from $Q$ to the category of…

Representation Theory · Mathematics 2021-01-18 Henrik Holm , Peter Jorgensen

We give an analytic version of the injectivity theorem by using multiplier ideal sheaves, and prove some extension theorems for the adjoint bundle of dlt pairs. Moreover, by combining techniques of the minimal model program, we obtain some…

Algebraic Geometry · Mathematics 2014-07-30 Yoshinori Gongyo , Shin-ichi Matsumura

We make precise the analogy between Goodwillie's calculus of functors in homotopy theory and the differential calculus of smooth manifolds by introducing a higher-categorical framework of which both theories are examples. That framework is…

Category Theory · Mathematics 2023-02-28 Kristine Bauer , Matthew Burke , Michael Ching

We give a new construction of the algebraic $K$-theory of small permutative categories that preserves multiplicative structure, and therefore allows us to give a unified treatment of rings, modules, and algebras in both the input and…

K-Theory and Homology · Mathematics 2009-09-29 A. D. Elmendorf , M. A. Mandell

In this note we interpret Voevodsky's Univalence Axiom in the language of (abstract) model categories. We then show that any posetal locally Cartesian closed model category $Qt$ in which the mapping $Hom^{(w)}(Z\times B,C):Qt\longrightarrow…

Category Theory · Mathematics 2011-11-16 Misha Gavrilovich , Assaf Hasson , Itay Kaplan

The cluster category is a triangulated category introduced for its combinatorial similarities with cluster algebras. We prove that a cluster algebra A of finite type can be realized as a Hall algebra, called the exceptional Hall algebra, of…

Representation Theory · Mathematics 2007-05-23 Philippe Caldero , Bernhard Keller

We systematically study the commutative factorization categories over the Ran space. We fill in what we consider as a gap in the construction of the factorizable Satake functor in the constructible setting in arXiv:1708.07205,…

Representation Theory · Mathematics 2026-05-22 Sergey Lysenko

In this paper, we first remind how we can see the "hull" of the pinwheel tiling as an inverse limit of simplicial complexes (Anderson and Putnam) and we then adapt the PV cohomology introduced in a paper of Bellissard and Savinien to define…

K-Theory and Homology · Mathematics 2015-05-13 Haïja Moustafa

Multiple harmonic sums are iterated generalizations of harmonic sums. Recently Dilcher has considered congruences involving q-analogs of these sums in depth one. In this paper we shall study the homogeneous case for arbitrary depth by using…

Number Theory · Mathematics 2015-01-30 Jianqiang Zhao

We introduce the notion of admissible injective envelope for a locally C*-algebra and show that each object in the category whose objects are unital Fr\'{e}chet locally C*-algebras and whose morphisms are unital admissible local completely…

Operator Algebras · Mathematics 2026-02-04 Maria Joiţa , Gheorghe-Ionuţ Şimon

We propose an extension of the Goncharov-Kenyon class of cluster integrable systems by their Hamiltonian reductions. This extension allows us to fill in the gap in cluster construction of the $q$-difference Painlev\'e equations, showing…

Exactly Solvable and Integrable Systems · Physics 2024-11-04 Mikhail Bershtein , Pavlo Gavrylenko , Andrei Marshakov , Mykola Semenyakin

The use of quantiles to obtain insights about multivariate data is addressed. It is argued that incisive insights can be obtained by considering directional quantiles, the quantiles of projections. Directional quantile envelopes are…

Methodology · Statistics 2014-12-01 Linglong Kong , Ivan Mizera

We introduce a notion of I-factorial quantum torsor, which consists of an integrable ergodic action of a locally compact quantum group on a type I-factor such that also the crossed product is a type I-factor. We show that any such…

Operator Algebras · Mathematics 2019-01-29 Kenny De Commer
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