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We introduce the group-compact coarse structure on a Hausdorff topological group in the context of coarse structures on an abstract group which are compatible with the group operations. We develop asymptotic dimension theory for the…

Geometric Topology · Mathematics 2012-01-24 Andrew Nicas , David Rosenthal

The article primarily surveys work that followed from the formulas discovered by Avramov and Iyengar in 2008, which permit one to compute certain Hochschild homology and cohomology modules as expressions involving dualizing complexes. One…

Algebraic Geometry · Mathematics 2017-06-22 Amnon Neeman

We consider the space of functions almost in $L_p$ and endow it with the topology of asymptotic $L_p$-convergence. This yields a completely metrizable topological vector space which, on finite measure spaces, coincides with the space of…

Functional Analysis · Mathematics 2025-12-01 Nuno J. Alves

The topic of this paper is a generalization of Tannaka duality to coclosed categories. As an application we prove reconstruction theorems for coalgebras (and bialgebras) in categories of topological vector spaces over a nonarchimedean field…

Representation Theory · Mathematics 2021-02-16 Anton Lyubinin

We study the topology of the moduli space of flat SU(2)-bundles over a nonorientable surface X. This moduli space may be identified with the space of homomorphisms Hom(\pi_1(X),SU(2)) modulo conjugation by SU(2). In particular, we compute…

Symplectic Geometry · Mathematics 2009-02-06 Thomas Baird

We investigate in detail the topological gauged Wess-Zumino-Witten models describing topological Kazama-Suzuki models based on complex Grassmannians. We show that there is a topological sector in which the ring of observables (constructed…

High Energy Physics - Theory · Physics 2009-10-28 Matthias Blau , Faheem Hussain , George Thompson

We study criteria for a ring - or more generally, for a small category - to be Gorenstein and for a module over it to be of finite projective dimension. The goal is to unify the universal coefficient theorems found in the literature and to…

K-Theory and Homology · Mathematics 2020-07-27 Ivo Dell'Ambrogio , Greg Stevenson , Jan Stovicek

We generalize Quillen's $F$-isomorphism theorem, Quillen's stratification theorem, the stable transfer, and the finite generation of cohomology rings from finite groups to homotopical groups. As a consequence, we show that the category of…

Algebraic Topology · Mathematics 2019-07-08 Tobias Barthel , Natalia Castellana , Drew Heard , Gabriel Valenzuela

Any finite-dimensional commutative (associative) graded algebra with all nonzero homogeneous subspaces one-dimensional is defined by a symmetric coefficient matrix. This algebraic structure gives a basic kind of $A$-graded algebras…

Rings and Algebras · Mathematics 2026-03-23 Yunnan Li , Shi Yu

We start by developing a theory of noncommutative (=NC) mixed motives with coefficients in any commutative ring. In particular, we construct a symmetric monoidal triangulated category of NC mixed motives, over a base field k, and a full…

Algebraic Geometry · Mathematics 2014-12-30 Goncalo Tabuada

Here we demonstrate, firstly, the construction of dualities using the exact renormalization group approach and, secondly, that spatial non-commutativity can emerge as such a duality. This is done in a simple quantum mechanical setting that…

High Energy Physics - Theory · Physics 2015-06-22 Sunandan Gangopadhyay , Frederik G Scholtz

We present a general algebraic framework for gauging a 0-form compact, connected Lie group symmetry in (2+1)d topological phases. Starting from a symmetry fractionalization pattern of the Lie group $G$, we first extend $G$ to a larger…

Strongly Correlated Electrons · Physics 2023-05-10 Meng Cheng , Po-Shen Hsin , Chao-Ming Jian

We construct a general cohomological induction isomorphism from a uniform measure equivalence of locally compact, second countable, unimodular groups which, as a special case, yields that the graded cohomology rings of quasi-isometric,…

Group Theory · Mathematics 2021-02-09 Thomas Gotfredsen , David Kyed

Topological T-duality is a transformation taking a gerbe on a principal torus bundle to a gerbe on a principal dual-torus bundle. We give a new geometric construction of T-dualization, which allows the duality to be extended in following…

Quantum Algebra · Mathematics 2007-10-07 Calder Daenzer

For a metric space $(X,d)$, Beer, Naimpally, and Rodriguez-Lopez in ([17]) proposed a unified approach to explore set convergences via uniform convergence of distance functionals on members of an arbitrary family $\mathcal{S}$ of subsets of…

General Topology · Mathematics 2024-07-24 Yogesh Agarwal , Varun Jindal

Let $A$ be a symmetrizable generalized Cartan matrix, which is not of finite or affine type. Let $\mathfrak{g}$ be the corresponding Kac-Moody algebra over a commutative ring $R$ with $1$. We construct an infinite-dimensional group $G_V(R)$…

Representation Theory · Mathematics 2023-02-09 Lisa Carbone , Dongwen Liu , Scott H. Murray

The article is developing homological algebra in modules over non-unital rings and algebras. The main application is the definition and study of (directed) homology of $(\infty,1)$-categories and of directed spaces, including relative…

Algebraic Topology · Mathematics 2026-03-13 Eric Goubault , Eliot Médioni

In this paper we study various convolution-type algebras associated with a locally compact quantum group from cohomological and geometrical points of view. The quantum group duality endows the space of trace class operators over a locally…

Functional Analysis · Mathematics 2011-10-25 Mehrdad Kalantar , Matthias Neufang

We begin the systematic study of cohomological Hecke operators of modifications of coherent sheaves on a smooth surface $X$, along a fixed proper curve $Z \subset X$. We develop the necessary geometric foundations in order to define the…

Algebraic Geometry · Mathematics 2026-03-03 Duiliu-Emanuel Diaconescu , Mauro Porta , Francesco Sala , Olivier Schiffmann , Eric Vasserot

We extend the $C^{\ast}-$algebraic formalism of Topological T-duality to section algebras of locally trivial bundles of strongly self-absorbing $C^{\ast}-$algebras and to a larger class of String Theoretic dualities. We argue that…

Mathematical Physics · Physics 2023-06-05 Ashwin S. Pande