Results 81 to 90 of about 1,348 (187)

Quandle cohomology is a Quillen cohomology [PDF]

open access: yesTransactions of the American Mathematical Society, 2018
Racks and quandles are fundamental algebraic structures related to the topology of knots, braids, and the Yang–Baxter equation. We show that the cohomology groups usually associated with racks and quandles agree with the Quillen cohomology groups for the algebraic theories of racks and quandles, respectively.
openaire   +3 more sources

Hochschild Cohomology Theories in White Noise Analysis

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
We show that the continuous Hochschild cohomology and the differential Hochschild cohomology of the Hida test algebra endowed with the normalized Wick product are the same.
Rémi Léandre
doaj   +1 more source

Equivariant deformation cohomology and group actions on compatible Hom-Leibniz algebras [PDF]

open access: yesArab Journal of Mathematical Sciences
PurposeThis paper introduces and studies compatible G-Hom-Leibniz algebras, namely compatible Hom-Leibniz algebras equipped with a finite group action.
Rinkila Bhutia, Namita Behera
doaj   +1 more source

Periodic cohomology [PDF]

open access: yesHomology, Homotopy and Applications, 2008
Paper published in peer reviewed journal in ...
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Blockchain Cohomology

open access: yesCoRR, 2018
We follow existing distributed systems frameworks employing methods from algebraic topology to formally define primitives of blockchain technology. We define the notion of cross chain liquidity, sharding and probability spaces between and within blockchain protocols. We incorporate recent advancements in synthetic homology to show that this topological
openaire   +2 more sources

Boundedness of cohomology

open access: yesJournal of Algebra, 2010
Let $d \in \N$ and let $\D^d$ denote the class of all pairs $(R,M)$ in which $R = \bigoplus_{n \in \N_0} R_n$ is a Noetherian homogeneous ring with Artinian base ring $R_0$ and such that $M$ is a finitely generated graded $R$-module of dimension $\leq d$. The cohomology table of a pair $(R,M) \in \D^d$ is defined as the family of non-negative integers $
Brodmann-Maeder, Monika   +2 more
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Coclass and cohomology

open access: yesJournal of Pure and Applied Algebra, 2005
Let \(G\) be a \(p\)-group, the `coclass' of \(G\) is defined as \(r=n-c\), where \(p^n\) is the order of \(G\) and \(c\) is the length of the lower central series of \(G\). There is a classification of finite \(p\)-groups according to their coclass: \textit{C. R. Leedham-Green} [J. Lond. Math. Soc. II, Ser. 50, No.
openaire   +2 more sources

On bounded cohomology of amalgamated products of groups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We investigate the structure of the singular part of the second bounded cohomology group of amalgamated products of groups by constructing an analog of the initial segment of the Mayer-Vietoris exact cohomology sequence for the spaces of pseudocharacters.
Igor V. Erovenko
doaj   +1 more source

On The Cohomology of Categories

open access: yesCommunications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 1973
We have started our study of the cohomology of categories [1] in particularizing a note of C. Ehresmann [2]. Then, our wislı was to put together, in a same work, our original study and the theory of M. Andre [3 ]. The result is the text herewith presen- ted.In the first chapter, we construct a homology and a coho- mology of categories.
openaire   +4 more sources

Cohomology and Crossed Modules of Modified Rota–Baxter Pre-Lie Algebras

open access: yesMathematics
The goal of the present paper is to provide a cohomology theory and crossed modules of modified Rota–Baxter pre-Lie algebras. We introduce the notion of a modified Rota–Baxter pre-Lie algebra and its bimodule.
Fuyang Zhu, Wen Teng
doaj   +1 more source

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