Results 81 to 90 of about 50,694 (192)

Faithfulness of actions on Riemann-Roch spaces

open access: yes, 2015
Given a faithful action of a finite group G on an algebraic curve X of genus g > 1, we give explicit criteria for the induced action of G on the Riemann-Roch space H^0(X,O_X(D)) to be faithful, where D is a G-invariant divisor on X of degree at least ...
Koeck, Bernhard, Tait, Joseph
core   +1 more source

Galois cohomology of SO(N)-connections

open access: yes, 2023
Abstract Two different types of Fuchsian function of the second kind are possible for SU(2)-bundle on U(1)-flat-connections of Chern-Simons field. Both of two different types of Fuchsian are parametrized by the same moduli as the LF-invariant measure situated on arbitrary Galois cohomology.
openaire   +1 more source

Some Additive Galois Cohomology Rings

open access: yesCommunications in Algebra, 2005
Let p be an odd prime. We consider the cyclotomic extension T := Z_(p)[zeta_{p^2}] of S := Z_(p), with galois group G := (Z/p^2)^*. Since this extension is wildly ramified, the SG-module T is not projective. We calculate its cohomology ring H^*(G, T; S), carrying the cup product induced by the ring structure of T.
Kuenzer, Matthias, Weber, Harald
openaire   +2 more sources

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   +2 more sources

Symplectic Bott-Chern cohomology of solvmanifolds [PDF]

open access: yes, 2013
We study the symplectic Bott-Chern cohomology by L.-S. Tseng and S.-T.
Daniele Angella   +3 more
core  

An Euler system for GU(2, 1). [PDF]

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

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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