Results 71 to 80 of about 52,130 (181)

PROPERTIES OF GROUPS G OF DOUBLE ERRORS AND ITS INVARIANTS IN BCH CODES

open access: yesСистемный анализ и прикладная информатика, 2018
The goal of the work is the further extending the scope of application of code automorthism in methods and algorithms of error correction by these codes. The effectiveness of such approach was demonstrated by norm of syndrome theory that was developed by
V. A. Lipnitskij, A. V. Serada
doaj   +1 more source

Secure Deployment of Smart Meters

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
A secure initialization process for smart meters is designed based on a systematic cybersecurity risk analysis of the deployment phase. Three initialization variants are defined and compared with respect to security, operational feasibility, and trust distribution.
David Kohout   +4 more
wiley   +1 more source

On local Galois deformation rings: generalised reductive groups

open access: yesForum of Mathematics, Pi
We study deformation theory of mod p Galois representations of p-adic fields with values in generalised reductive group schemes, such as L-groups and C-groups.
Vytautas Paškūnas, Julian Quast
doaj   +1 more source

On separable algebras in Grothendieck Galois theory

open access: yesLe Matematiche, 1996
We give an explicit proof of the fundamental theorem of Grothendieck Galois theory: the category of separable algebras over a field K is anti-equivalent to the category of continuous actions on finite sets of the profinite fundamental group of K.
Federico G. Lastaria
doaj  

Fuzzy Bases of Fuzzy Domains

open access: yesJournal of Applied Mathematics, 2013
This paper is an attempt to develop quantitative domain theory over frames. Firstly, we propose the notion of a fuzzy basis, and several equivalent characterizations of fuzzy bases are obtained.
Sanping Rao, Qingguo Li
doaj   +1 more source

Rough sets based on Galois connections

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2020
Rough set theory is an important tool to extract knowledge from relational databases. The original definitions of approximation operators are based on an indiscernibility relation, which is an equivalence one.
Madrid Nicolás   +2 more
doaj   +1 more source

Galois Theory

open access: yes
These are the notes for an undergraduate course at the University of Edinburgh, 2021-2023. Assuming basic knowledge of ring theory, group theory and linear algebra, the notes lay out the theory of field extensions and their Galois groups, up to and including the fundamental theorem of Galois theory.
  +5 more sources

Modularity of trianguline Galois representations

open access: yesForum of Mathematics, Sigma
We use the theory of trianguline $(\varphi ,\Gamma )$ -modules over pseudorigid spaces to prove a modularity lifting theorem for certain Galois representations which are trianguline at p, including those with characteristic p coefficients.
Rebecca Bellovin
doaj   +1 more source

Meromorphic Non-Integrability of Several 3D Dynamical Systems

open access: yesEntropy, 2017
In this paper, we apply the differential Galoisian approach to investigate the meromorphic non-integrability of a class of 3D equations in mathematical physics, including Nosé–Hoover equations, the Lü system, the Rikitake-like system and Rucklidge ...
Kaiyin Huang, Shaoyun Shi, Wenlei Li
doaj   +1 more source

Bridging 4D QFTs and 2D VOAs via 3D high-temperature EFTs

open access: yesJournal of High Energy Physics
The high-temperature limit of the superconformal index, especially on higher sheets, often captures useful universal information about a theory. In 4d N = 2 $$ \mathcal{N}=2 $$ superconformal field theories with fractional r-charges, there exists a ...
Arash Arabi Ardehali   +3 more
doaj   +1 more source

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