Results 31 to 40 of about 53,079 (211)

Galois coverings of one-sided bimodule problems

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2021
Applying geometric methods of 2-dimensional cell complex theory, we construct a Galois covering of a bimodule problem satisfying some structure, triangularity and finiteness conditions in order to describe the objects of finite representation type.
Vyacheslav Babych, Nataliya Golovashchuk
doaj   +1 more source

Groups of generalized G‐type and applications to torsion subgroups of rational elliptic curves over infinite extensions of Q

open access: yesTransactions of the London Mathematical Society, 2019
Recently, there has been much interest in studying the torsion subgroups of elliptic curves base‐extended to infinite extensions of Q. In this paper, given a finite group G, we study what happens with the torsion of an elliptic curve E over Q when ...
Harris B. Daniels   +2 more
doaj   +1 more source

Topological Galois theory

open access: yesAdvances in Mathematics, 2016
We introduce an abstract topos-theoretic framework for building Galois-type theories in a variety of different mathematical contexts; such theories are obtained from representations of certain atomic two-valued toposes as toposes of continuous actions of a topological group.
openaire   +3 more sources

From Galois to Hopf Galois: theory and practice

open access: yes, 2014
Hopf Galois theory expands the classical Galois theory by considering the Galois property in terms of the action of the group algebra k[G] on K/k and then replacing it by the action of a Hopf algebra.
Crespo, Teresa   +2 more
core   +1 more source

Localic Galois theory

open access: yesAdvances in Mathematics, 2003
In Proposition I of "Memoire sur les conditions de resolubilite des equations par radicaux", Galois established that any intermediate extension of the splitting field of a polynomial with rational coefficients is the fixed field of its galois group. We first state and prove the (dual) categorical interpretation of of this statement, which is a theorem ...
openaire   +3 more sources

A new discretization of the Euler equation via the finite operator theory [PDF]

open access: yesOpen Communications in Nonlinear Mathematical Physics
We propose a novel discretization procedure for the classical Euler equation, based on the theory of Galois differential algebras and the finite operator calculus developed by G.C. Rota and collaborators.
Miguel A. Rodríguez   +1 more
doaj   +1 more source

Differential Galois theory II

open access: yesAnnals of Pure and Applied Logic, 1997
This paper proposes a generalization of Kolchin's Galois theory of differential fields. In the Kolchin theory, the Galois groups correspond to algebraic groups over the subfield of constants; moreover every algebraic group can arise in this way. In this paper, the constants are replaced by an arbitrary differential algebraic set \(X\). Accordingly, \(X\
openaire   +4 more sources

Construction of q-ary(n,M,d)-codes in PG(2,16)

open access: yesWasit Journal for Pure Sciences, 2023
The goal of this paper was to study the applications of the projective plane PG (2, q) over a Galois field of order q in the projective q-ary (n, M, d) -code such that the parameters length of code n, the maximum value size code M, and the minimum ...
Dunya Fareeq Fendi   +1 more
doaj   +1 more source

Reduced group schemes as iterative differential Galois groups

open access: yes, 2019
This article is on the inverse Galois problem in Galois theory of linear iterative differential equations in positive characteristic. We show that it has an affirmative answer for reduced algebraic group schemes over any iterative differential field ...
Maurischat, Andreas
core   +1 more source

On the Galoisian Structure of Heisenberg Indeterminacy Principle [PDF]

open access: yes, 2013
We revisit Heisenberg indeterminacy principle in the light of the Galois-Grothendieck theory for the case of finite abelian Galois extensions. In this restricted framework, the Galois-Grothendieck duality between finite K-algebras split by a Galois ...
Catren, Gabriel, Page, Julien
core   +1 more source

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