Results 81 to 90 of about 1,258 (197)

F-structures and Bredon-Galois cohomology

open access: yesAppl. Categorical Struct., 2011
39 ...
Dieter Degrijse, Nansen Petrosyan
openaire   +3 more sources

On the cohomology of Galois groups determined by Witt rings

open access: yes, 1999
Let F denote a field of characteristic different from two. In this paper we describe the mod2 cohomology of a Galois group GF (called the W-group of F) which is known to essentially characterize the Witt ring WF of anisotropic quadratic modules over F ...
Karagueuzian, B.   +8 more
core   +1 more source

The volumes of Miyauchi subgroups. [PDF]

open access: yesArch Math, 2022
Lesesvre D, Petrow I.
europepmc   +1 more source

Cohomology of absolute Galois groups

open access: yes, 2014
The main problem this thesis deals with is the characterization of profinite groups which are realizable as absolute Galois groups of fields: this is currently one of the major problems in Galois theory. Usually one reduces the problem to the pro-$p$ case, i.e., one would like to know which pro-$p$ groups occur as maximal pro-$p$ Galois groups, i.e ...
openaire   +4 more sources

Remark on Galois cohomology

open access: yes, 2023
Abstract We recast the Galois cohomology of the variety V over a number field k in terms of the K-theory of a C*-algebra A_V connected to V. It is proved that V is isomorphic to V' over k (algebraic closure of k, resp.) if and only if A_V is isomorphic (Morita equivalent, resp.) to A_V' In particular, the Morita equivalent C*-algebras
openaire   +1 more source

An Euler system for GU(2, 1). [PDF]

open access: yesMath Ann, 2022
Loeffler D, Skinner C, Zerbes SL.
europepmc   +1 more source

Galois cohomology of Fontaine rings [PDF]

open access: yes, 2007
Let $V$ be a complete discrete valuation ring of mixed characteristic. We express the crystalline cohomology of the special fibre of certain smooth affine $V$-schemes $X=Spec(R)$ tensored with an appropriate ring of $p$-adic periods as the Galois ...
Lodh, R., Lodh, Rémi Shankar
core  

On the cohomology of a Galois entwining

open access: yes, 2004
In this short note, we show that the cohomology of an algebra entwined with a coalgebra as defined by T. Brzeziński (J. Algebra 235 (2001), no. 1, 176--202; arXiv:math.RA/9909108) computes the Hochschild cohomology of the subalgebra of coinvariants when the extension is Galois.
openaire   +2 more sources

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