Results 31 to 40 of about 1,135,760 (216)

Connections on trivial vector bundles over projective schemes

open access: yesComptes Rendus. Mathématique
Over a smooth and proper complex scheme, the differential Galois group of an integrable connection may be obtained as the closure of the transcendental monodromy representation.
Biswas, Indranil   +2 more
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

On the additive image of zeroth persistent homology

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract For a category X$X$ and a finite field F$F$, we study the additive image of the functor H0(−;F)∗:rep(X,Top)→rep(X,VectF)$\operatorname{H}_0(-;F)_* \colon \operatorname{rep}(X, \mathbf {Top}) \rightarrow \operatorname{rep}(X, \mathbf {Vect}_F)$, or equivalently, of the free functor rep(X,Set)→rep(X,VectF)$\operatorname{rep}(X, \mathbf {Set ...
Ulrich Bauer   +3 more
wiley   +1 more source

On Constructivity of Galois Connections [PDF]

open access: yes, 2017
Abstract interpretation-based static analyses rely on abstract domains of program properties, such as intervals or congruences for integer variables. Galois connections (GCs) between posets provide the most widespread and useful formal tool for mathematically specifying abstract domains.
openaire   +2 more sources

Galois connections for bilattices

open access: yesAlgebra universalis, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Koutras, C.D., Pitsiladis, G.V.
openaire   +3 more sources

On the notion of indiscernibility in the light of Galois-Grothendieck Theory [PDF]

open access: yes, 2013
We analyze the notion of indiscernibility in the light of the Galois theory of field extensions and the generalization to K-algebras proposed by Grothendieck.
Catren, Gabriel, Page, Julien
core  

Galois structure of Zariski cohomology for weakly ramified covers of curves

open access: yes, 2004
We compute equivariant Euler characteristics of locally free sheaves on curves, thereby generalizing several results of Kani and Nakajima. For instance, we extend Kani's computation of the Galois module structure of the space of global meromorphic ...
Koeck, Bernhard
core   +1 more source

The Singular Value Decomposition over Completed Idempotent Semifields

open access: yesMathematics, 2020
In this paper, we provide a basic technique for Lattice Computing: an analogue of the Singular Value Decomposition for rectangular matrices over complete idempotent semifields (i-SVD).
Francisco J. Valverde-Albacete   +1 more
doaj   +1 more source

On the integral simplicial volume of cyclic covers of mapping tori

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 3, September 2026.
Abstract In this paper, we investigate the asymptotic behavior of the integral simplicial volume of cyclic covers of manifolds that fiber over the circle with fiber given by an n$n$‐dimensional torus. By studying the integral filling volume—an invariant introduced by Frigerio and the first author—for the monodromy, we establish both lower and upper ...
Federica Bertolotti   +1 more
wiley   +1 more source

A comprehensive survey on formal concept analysis, its research trends and applications

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2016
In recent years, FCA has received significant attention from research communities of various fields. Further, the theory of FCA is being extended into different frontiers and augmented with other knowledge representation frameworks.
Singh Prem Kumar   +2 more
doaj   +1 more source

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