Results 11 to 20 of about 12,500,002 (282)
Isotropy in Group Cohomology [PDF]
Bulletin of the London Mathematical Society, 2013 The analogue of Lagrangians for symplectic forms over finite groups is studied, motivated by the fact that symplectic G-forms with a normal Lagrangian ...
David, Nir Ben +2 more
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The cohomology of Torelli groups is algebraic [PDF]
Forum of Mathematics, Sigma, 2020 The Torelli group of $W_g = \#^g S^n \times S^n$ is the group of diffeomorphisms of $W_g$ fixing a disc that act trivially on $H_n(W_g;\mathbb{Z} )$ .
Alexander Kupers, Oscar Randal-Williams
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Cohomology of Group Extensions [PDF]
Transactions of the American Mathematical Society, 1953 This method is based on the Cartan-Leray spectral sequence, [3; 1 ], and can be generalized to other algebraic situations, as will be shown in a forthcoming paper of Cartan-Eilenberg [2]. Since the details of the Cartan-Leray technique have not been published (other than in seminar notes of limited circulation), we develop them in Chapter I.
G. Hochschild, J-P. Serre
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The cohomology of group extensions [PDF]
Transactions of the American Mathematical Society, 1963 Leonard S. Charlap, A. T. Vasquez
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Cohomology of Lie groups [PDF]
Illinois Journal of Mathematics, 1962 G. Hochschild, G. D. Mostow
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The cohomology of the symmetric groups [PDF]
Transactions of the American Mathematical Society, 1978 Let S n {{\mathcal {S}}_n} be the symmetric group on n letters and SG the limit of the sets of degree +1 homotopy equivalences of the n − 1 n - 1 sphere. Let p be an odd prime.
Benjamin M. Mann
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L2-Cohomology and group cohomology
Topology, 1986 J. Cheeger, M. Gromov
semanticscholar +3 more sources
ON THE COHOMOLOGY OF TORELLI GROUPS [PDF]
Forum of Mathematics, Pi, 2020 We completely describe the algebraic part of the rational cohomology of the Torelli groups of the manifolds$\#^{g}S^{n}\times S^{n}$relative to a disc in a stable range, for$2n\geqslant 6$. Our calculation is also valid for$2n=2$assuming that the rational cohomology groups of these Torelli groups are finite-dimensional in a stable range.
Kupers, Alexander +1 more
openaire +4 more sources
Cohomology of moduli spaces of Del Pezzo surfaces
Mathematische Nachrichten, Volume 296, Issue 1, Page 80-101, January 2023., 2023 Abstract We compute the rational Betti cohomology groups of the coarse moduli spaces of geometrically marked Del Pezzo surfaces of degree 3 and 4 as representations of the Weyl groups of the corresponding root systems. The proof uses a blend of methods from point counting over finite fields and techniques from arrangement complements.
Olof Bergvall, Frank Gounelas
wiley +1 more source
First and Second Module Cohomology Groups for Non Commutative Semigroup Algebras [PDF]
Sahand Communications in Mathematical Analysis, 2020 Let $S$ be a (not necessarily commutative) Clifford semigroup with idempotent set $E$. In this paper, we show that the first (second) Hochschild cohomology group and the first (second) module cohomology group of semigroup algbera $\ell^1(S)$ with ...
Ebrahim Nasrabadi
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