Results 21 to 30 of about 343 (169)

Pair algebras and Galois connections [PDF]

open access: yesInformation Processing Letters, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +4 more sources

The Order of Hypersubstitutions of Type (2,1)

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
Hypersubstitutions are mappings which map operation symbols to terms of the corresponding arities. They were introduced as a way of making precise the concept of a hyperidentity and generalizations to 𝑀-hyperidentities.
Tawhat Changphas, Wonlop Hemvong
doaj   +1 more source

The minimal closed monoids for the Galois connection ${\rm End}$-${\rm Con}$ [PDF]

open access: yesMathematica Bohemica
The minimal nontrivial endomorphism monoids $M={\rm End}{\rm Con} (A,F)$ of congruence lattices of algebras $(A,F)$ defined on a finite set $A$ are described.
Danica Jakubíková-Studenovská   +2 more
doaj   +1 more source

Involutions on Relational Program Calculi [PDF]

open access: yesScientific Annals of Computer Science, 2008
The standard Galois connection between the relational and predicate-transformer models of sequential programming (defined in terms of weakest precondition) confers a certain similarity between them.
I.M. Rewitzky, J.W. Sanders
doaj  

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 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   +1 more source

ESSENTIAL AND RETRACTABLE GALOIS CONNECTIONS [PDF]

open access: yesJournal of Algebra and Its Applications, 2013
For bounded lattices, we introduce certain Galois connections, called (cyclically) essential, retractable and UC Galois connections, which behave well with respect to concepts of module-theoretic nature involving essentiality. We show that essential retractable Galois connections preserve uniform dimension, whereas essential retractable UC Galois ...
openaire   +2 more sources

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

An Innovative Approach to Multi‐Valued Logic

open access: yesIEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
The current generation of computer systems operates on the principles of binary logic, which encompasses both logical and arithmetic operations. However, silicon technology has reached its peak performance, prompting researchers to explore alternative methods for enhancing computational efficiency. One such method is the adoption of Multi‐Valued Logic (
Ali Mokhtari, Peyman Kabiri
wiley   +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

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