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In this paper, we give an explicit chain map, which induces the algebra isomorphism between the Hochschild cohomology ${\bf HH}^{\bullet}(B)$ and the $H$-invariant subalgebra ${\bf H}^{\bullet}(A, B)^{H}$ under two mild hypotheses, where…

Rings and Algebras · Mathematics 2025-02-05 Liyu Liu , Wei Ren , Shengqiang Wang

We provide a diagrammatic computation for the bilinear form, which is defined as the pairing between the (relative) cup products with every local coefficients and every integral homology 2-class of every links in the 3-sphere. As a…

Geometric Topology · Mathematics 2016-07-19 Takefumi Nosaka

In this paper we calculate the Hochschild cohomology of graded skew-gentle algebras, together with its structure as graded commutative algebra under the cup product and its Lie algebra structure given by the Gerstenhaber bracket. One of the…

Representation Theory · Mathematics 2026-01-12 Xiuli Bian , Sibylle Schroll , Andrea Solotar , Xiao-chuang Wang , Can Wen

Using a previous classification result on symmetric additive 2-cocycles, we collect a variety of facts about the Lubin-Tate cohomology of formal groups to compute the 2-primary component of the scheme of symmetric multiplicative 2-cocycles.…

Algebraic Topology · Mathematics 2011-05-26 Adam Hughes , JohnMark Lau , Eric Peterson

A combinatorial construction is used to analyze the properties of polyhedral products and generalized moment-angle complexes with respect to certain operations on CW pairs including exponentiation. This allows for the construction of…

Algebraic Topology · Mathematics 2015-03-17 A. Bahri , M. Bendersky , F. R. Cohen , S. Gitler

We show that the category of numerically generated pointed spaces is complete, cocomplete, and monoidally closed with respect to the smash product, and then utilize these features to establish a simple but flexible method for constructing…

Algebraic Topology · Mathematics 2010-10-19 K. Shimakawa , K. Yoshida , T. Haraguchi

We give a general construction of rings graded by the conjugacy classes of a finite group. Some examples of our construction are the Hochschild cohomology ring of a finite group algebra, the Grothendieck ring of the Drinfel'd double of a…

Rings and Algebras · Mathematics 2007-05-23 Sarah J. Witherspoon

We construct the augmentation representation. It is a representation of the fundamental group of the link complement associated to an augmentation of the framed cord algebra. This construction connects representations of two link invariants…

Geometric Topology · Mathematics 2022-08-16 Honghao Gao

The well-known theory of Pontryagin duality provides a strong connection between the homology and cohomology theories of a profinite group in appropriate categories. A construction for taking the `profinite direct sum' of an infinite family…

Algebraic Topology · Mathematics 2024-08-26 Gareth Wilkes

In this paper, we introduce the concept and representation of modified $\lambda$-differential Lie triple systems. Next, we define the cohomology of modified $\lambda$-differential Lie triple systems with coefficients in a suitable…

Rings and Algebras · Mathematics 2025-03-25 Wen Teng , Fengshan Long , Yu Zhang

The tensor product of props was defined by Hackney and Robertson as an extension of the Boardman-Vogt product of operads to more general monoidal theories. Theories that factor as tensor products include the theory of commutative monoids…

Category Theory · Mathematics 2021-01-27 Amar Hadzihasanovic

We study the structure and representation theory of affine wreath product algebras and their cyclotomic quotients. These algebras, which appear naturally in Heisenberg categorification, simultaneously unify and generalize many important…

Representation Theory · Mathematics 2020-06-05 Alistair Savage

We construct a cohomology theory with compact support H^i_c(X_ar,Z(n))$ for separated schemes of finite type over a finite field, which should play a role analog to Lichtenbaum's Weil-etale cohomology groups for smooth and projective…

Number Theory · Mathematics 2007-05-23 Thomas H. Geisser

We study the category of finite--dimensional bi--graded representations of toroidal current algebras associated to finite--dimensional complex simple Lie algebras. Using the theory of graded representations for current algebras, we…

Representation Theory · Mathematics 2016-01-20 Deniz Kus , Peter Littelmann

We introduce the notion of \emph{topo-symmetric extensions} of topological groups, a new generalization of classical group extensions that incorporates both topological and symmetry constraints. We define morphisms between such extensions,…

General Mathematics · Mathematics 2025-10-02 Es-said En-naoui

We develop a theory of $C_p$-Green functors of Lie type, unifying the axiomatic framework of Green functors with the structure of Lie algebras under the action of a cyclic group $C_p$ of prime order. Extending classical notions from…

Rings and Algebras · Mathematics 2025-07-11 Tarik Anowar , Satyendra Kumar Mishra , Ripan Saha

We study properties of Cartesian products of digital images, using a variety of adjacencies that have appeared in the literature.

Geometric Topology · Mathematics 2017-05-23 Laurence Boxer

In this thesis, we introduce a new cohomology theory associated to a Lie 2-algebras and a new cohomology theory associated to a Lie 2-group. These cohomology theories are shown to extend the classical cohomology theories of Lie algebras and…

Differential Geometry · Mathematics 2018-11-09 Camilo Angulo

We use the theory of Condensed Mathematics to build a condensed cohomology theory for the Weil group of a $p$-adic field. The cohomology groups are proved to be locally compact abelian groups of finite ranks in some special cases. This…

Number Theory · Mathematics 2025-03-19 Marco Artusa

We provide a new approach towards the analysis of the fusion products defined by B.~Feigin and S.~Loktev in the representation theory of (truncated) current Lie algebras. We understand the fusion product as a degeneration using Gr\"obner…

Representation Theory · Mathematics 2021-01-08 Johannes Flake , Ghislain Fourier , Viktor Levandovskyy