Results 1 to 10 of about 39,254 (123)

Designing a Block Cipher in Galois Extension Fields for IoT Security

open access: yesIoT, 2021
This paper focuses on a block cipher adaptation of the Galois Extension Fields (GEF) combination technique for PRNGs and targets application in the Internet of Things (IoT) space, an area where the combination technique was concluded as a quality stream ...
Kiernan George, Alan J. Michaels
doaj   +3 more sources

Hopf Differential Graded Galois Extensions

open access: yesMathematics, 2022
We introduce the concept of Hopf dg Galois extensions. For a finite dimensional semisimple Hopf algebra H and an H-module dg algebra R, we show that D(R#H)≅D(RH) is equivalent to that R/RH is a Hopf differential graded Galois extension.
Bo-Ye Zhang
doaj   +1 more source

Gorenstein Flat Modules of Hopf-Galois Extensions

open access: yesMathematics, 2023
Let A/B be a right H-Galois extension over a semisimple Hopf algebra H. The purpose of this paper is to give the relationship of Gorenstein flat dimensions between the algebra A and its subalgebra B, and obtain that the global Gorenstein flat dimension ...
Qiaoling Guo   +3 more
doaj   +1 more source

Nontrivial Galois module structure of cyclotomic fields [PDF]

open access: yes, 2002
We say a tame Galois field extension $L/K$ with Galois group $G$ has trivial Galois module structure if the rings of integers have the property that $\Cal{O}_{L}$ is a free $\Cal{O}_{K}[G]$-module.
Conrad, Marc, Replogle, Daniel R.
core   +5 more sources

Random Galois extensions of Hilbertian fields [PDF]

open access: yes, 2012
Let L be a Galois extension of a countable Hilbertian field K.
Bary-Soroker, Lior, Fehm, Arno
core   +2 more sources

Local epsilon isomorphisms [PDF]

open access: yes, 2013
In this paper, we prove the "local epsilon-isomorphism conjecture" of Fukaya and Kato for a particular class of Galois modules obtained by tensoring a Zp-lattice in a crystalline representation of the Galois group of Qp with a representation of an ...
David Loeffler   +3 more
core   +1 more source

On Azumaya Galois extensions and skew group rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
Two characterizations of an Azumaya Galois extension of a ring are given in terms of the Azumaya skew group ring of the Galois group over the extension and a Galois extension of a ring with a special Galois system is determined by the trace of the Galois
George Szeto
doaj   +1 more source

On weak center Galois extensions of rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
Let B be a ring with 1, C the center of B, G a finite automorphism group of B, and BG the set of elements in B fixed under each element in G. Then, the notion of a center Galois extension of BG with Galois group G (i.e., C is a Galois algebra over CG ...
George Szeto, Lianyong Xue
doaj   +1 more source

On characterizations of a center Galois extension

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Let B be a ring with 1,  C the center of B,  G a finite automorphism group of B, and BG the set of elements in B fixed under each element in G. Then, it is shown that B is a center Galois extension of BG (that is, C is a Galois algebra over CG with ...
George Szeto, Lianyong Xue
doaj   +1 more source

The Galois extensions induced by idempotents in a Galois algebra

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
Let B be a Galois algebra with Galois group G, Jg={b∈B|bx=g(x)b   for all   x∈B} for each g∈G, eg the central idempotent such that BJg=Beg, and eK=∑g∈K,eg≠1eg for a subgroup K of G.
George Szeto, Lianyong Xue
doaj   +1 more source

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