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A Note on Coeffective 1–Differentiable Cohomology

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014
After a brief review of some basic notions concerning 1-differentiable cohomology, named here ď-cohomology, we introduce a Lichnerowicz ď– cohomology in a classical way.
Ida Cristian, Mercheşan Sabinşan
doaj   +1 more source

alpha-type Chevalley-Eilenberg cohomology of Hom-Lie algebras and bialgebras [PDF]

open access: yes, 2019
The purpose of this paper is to define an $\alpha$-type cohomology, which we call $\alpha$-type Chevalley-Eilenberg cohomology, for Hom-Lie algebras.
Hurle, Benedikt, Makhlouf, Abdenacer
core   +2 more sources

Spin cohomology [PDF]

open access: yesJournal of Geometry and Physics, 2006
We explore differential and algebraic operations on the exterior product of spinor representations and their twists that give rise to cohomology, the spin cohomology. A linear differential operator $d$ is introduced which is associated to a connection $\nabla$ and a parallel spinor $ $, $\nabla =0$, and the algebraic operators $D_{(p)}$ are ...
openaire   +4 more sources

On the Cohomology of Topological Semigroups

open access: yesCommunications in Advanced Mathematical Sciences, 2019
In this short note, we give some new results on continuous bounded cohomology groups of topological semigroups with values in complex field. We show that the second continuous bounded cohomology group of a compact metrizable semigroup, is a Banach space.
Maysam Maysami Sadr   +1 more
doaj   +1 more source

Deformations of Yang-Baxter operators via n-Lie algebra cohomology

open access: yesNuclear Physics B, 2023
We introduce a cohomology theory of n-ary self-distributive objects in the tensor category of vector spaces that classifies their infinitesimal deformations.
Mohamed Elhamdadi, Emanuele Zappala
doaj   +1 more source

Approximate cohomology

open access: yesSelecta Mathematica, 2017
Let $k$ be a field, $G$ be an abelian group and $r\in \mathbb N$. Let $L$ be an infinite dimensional $k$-vector space. For any $m\in End_k(L)$ we denote by $r(m)\in [0,\infty ]$ the rank of $m$. We define by $R(G,r,k)\in [0,\infty]$ the minimal $R$ such that for any map $A:G \to End_k(L)$ with $r(A(g'+g'')-A(g')-A(g''))\leq r$, $g',g''\in G$ there ...
Kazhdan, David, Ziegler, Tamar
openaire   +3 more sources

Hochschild Cohomology

open access: yesNotices of the American Mathematical Society, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Floer cohomology of torus fibers and real lagrangians in Fano toric manifolds [PDF]

open access: yes, 2011
In this article, we consider the Floer cohomology (with $\Z_2$ coefficients) between torus fibers and the real Lagrangian in Fano toric manifolds.
Alston, Garrett, Amorim, Lino
core   +1 more source

The Hochschild cohomology ring of the singular cochain algebra of a space [PDF]

open access: yes, 2011
We determine the algebra structure of the Hochschild cohomology of the singular cochain algebra with coefficients in a field on a space whose cohomology is a polynomial algebra.
Kuribayashi, Katsuhiko
core   +5 more sources

Quadratic Cohomology [PDF]

open access: yesArnold Mathematical Journal, 2014
We study homological invariants of smooth families of real quadratic forms as a step towards a "Lagrange multipliers rule in the large" that intends to describe topology of smooth maps in terms of scalar Lagrange functions.
openaire   +3 more sources

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