Results 71 to 80 of about 1,258 (197)
Self-duality from twisted cohomology
Journal of High Energy PhysicsRecently a notion of self-duality for differential equations of maximal cuts was introduced, which states that there should be a basis in which the matrix for an ε-factorised differential equation is persymmetric.
Claude Duhr +3 more
doaj +1 more source
An Introduction to Galois Cohomology and its Applications
, 2010 This is the first elementary introduction to Galois cohomology and its applications. The first part is self-contained and provides the basic results of the theory, including a detailed construction of the Galois cohomology functor, as well as an ...
Grégory Berhuy
core +1 more source
Universal Spaces for Unramified Galois Cohomology [PDF]
, 2017 We construct and study universal spaces for birational invariants of algebraic varieties over algebraic closures of finite fields.
Bogomolov, Fedor, Tschinkel, Yuri
openaire +2 more sources
Galois descent, cohomology, and conjugacy
, 2021 We give a concise exposition on the application of non-abelian Galois cohomology to descent problems in algebra, as developed by A. Borel, J.-P. Serre, and others in the late fifties and early sixties. Although its origins lie in algebraic number theory,
Moore, Jenna
core
Splitting families in Galois cohomology
, 2020 The aim of this thesis is the construction of splitting families in Galois cohomology, following the homonymous article of Demarche and Florence. This is done by using two tools, one algebraic and one geometric.
PIRANI, MATTIA
core
Torsion Classes in Cohomology and Galois Representations
, 1998 We will prove that certain torsion classes in the cohomology of SL(2, O) give Galois representations for the relevant number ...
Kühnlein, Stefan
core +1 more source
Higher central extensions and cohomology [PDF]
, 2015 We establish a Galois-theoretic interpretation of cohomology in semi-abelian categories: cohomology with trivial coefficients classifies central extensions, also in arbitrarily high degrees. This allows us to obtain a duality, in a certain sense, between
Van der Linden, Tim, Rodelo, Diana
core +1 more source
Classifying multiplets of totally real cubic fields [PDF]
Electronic Journal of Mathematics, 2021 Daniel C. Mayer
doaj +1 more source
Refined and l-adic Euler characteristics of nearly perfect complexes
, 2004 We lift the Euler characteristic of a nearly perfect complex to a relative algebraic K-group by passing to its l-adic Euler ...
Burns, David +6 more
core +1 more source
Computing the equivariant Euler characteristic of Zariski and étale sheaves on curves
, 2005 We prove an equivariant Grothendieck-Ogg-Shafarevich formula. This formula may be viewed as an étale analogue of well-known formulas for Zariski sheaves generalizing the classical Chevalley-Weil formula.
Koeck, Bernhard
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