Results 11 to 20 of about 213,067 (334)

Neutrosophic Cubic Subalgebras and Neutrosophic Cubic Closed Ideals of B-algebras [PDF]

open access: yesNeutrosophic Sets and Systems, 2016
The objective of this paper is to introduced the concept of neutrosophic cubic set to subalgebras, ideals and closed ideals of B-algebra. Links among neutrosophic cubic subalgebra with neutrosophic cubic ideals and neutrosophic closed ideals of B ...
Rakib Iqbal   +2 more
doaj   +1 more source

đ¶*-algebras associated with branched coverings [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
In this note we analyze the C ∗ C^{\ast } -algebra associated with a branched covering both as a groupoid C ∗ C^{\ast } -algebra and as a Cuntz-Pimsner algebra. We determine conditions when the algebra is simple and purely infinite.
Deaconu, Valentin, Muhly, Paul S.
openaire   +2 more sources

Completeness for the coalgebraic cover modality [PDF]

open access: yesLogical Methods in Computer Science, 2012
We study the finitary version of the coalgebraic logic introduced by L. Moss. The syntax of this logic, which is introduced uniformly with respect to a coalgebraic type functor, required to preserve weak pullbacks, extends that of classical propositional
Clemens Kupke   +2 more
doaj   +1 more source

The Center Of A Generalized Effect Algebra

open access: yesDemonstratio Mathematica, 2014
In this article, we study the center of a generalized effect algebra (GEA), relate it to the exocenter, and in case the GEA is centrally orthocomplete (a COGEA), relate it to the exocentral cover system. Our main results are that the center of a COGEA is
Foulis D. J., PulmannovĂĄ S.
doaj   +1 more source

A Blended Learning Approach for an Introductory Computer Science Course

open access: yesEducation Sciences, 2021
In this paper, we present our experience with redesigning an introductory computer science course for (electrical) engineers with blended learning concepts.
Anna Förster   +9 more
doaj   +1 more source

Digital Image Watermarking using Singular Value Decomposition [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2010
This paper  presents a digital image watermarking  that  applied theory of linear algebra called “Singular Value Decomposition (SVD)” to digital image watermarking .SVD watermarking scheme, which successfully embeds watermarks into images imperceptible ...
Sura Sheriff
doaj   +1 more source

Apprentissages algébriques

open access: yesAnnales de Didactique et de Sciences Cognitives, 2016
This first article of a series of two presents on teaching elementary algebra different standpoints, not always easy to reconcile with each other; a second article will cover activities to promote the learning of algebra.
Raymond Duval, François Pluvinage
doaj   +1 more source

Exel's crossed product for non-unital C*-algebras [PDF]

open access: yes, 2009
We consider a family of dynamical systems (A,alpha,L) in which alpha is an endomorphism of a C*-algebra A and L is a transfer operator for \alpha. We extend Exel's construction of a crossed product to cover non-unital algebras A, and show that the C ...
Adji   +12 more
core   +3 more sources

Carrollian and celestial spaces at infinity

open access: yesJournal of High Energy Physics, 2022
We show that the geometry of the asymptotic infinities of Minkowski spacetime (in d + 1 dimensions) is captured by homogeneous spaces of the Poincaré group: the blow-ups of spatial (Spi) and timelike (Ti) infinities in the sense of Ashtekar-Hansen and a ...
JosĂ© Figueroa-O’Farrill   +3 more
doaj   +1 more source

Covering Algebras I. Extended Affine Lie Algebras

open access: yesJournal of Algebra, 2002
Covering Algebras of extended affine Lie algebras(EALA's) relative to finite order automorphisms are studied. Conditions are given for when the resulting algebra is again an EALA. This paper deals with affinizations of EALA's relative to finite order automorphisms and these algebras are generalizations of the affine Kac-Moody Lie algebras.
Allison, Bruce   +2 more
openaire   +2 more sources

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