Results 21 to 30 of about 2,942,043 (344)

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

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

Galois coverings of selfinjective algebras by repetitive algebras [PDF]

open access: yesTransactions of the American Mathematical Society, 1999
Let \(A\) be a basic and connected selfinjective Artin algebra. Then the right and the left socles of \(A\) coincide and are denoted by \(\text{soc }A\). Two selfinjective algebras \(A\) and \(A'\) are called socle-equivalent if the quotient algebras \(A/\text{soc} A\) and \(A'/\text{soc} A'\) are isomorphic.
Andrzej Skowroński, Kunio Yamagata
openaire   +2 more sources

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

Lie algebras and coverings [PDF]

open access: yesCommentarii Mathematici Helvetici, 1994
Let \(\Lambda\) be an associative unitary finite-dimensional \(\mathbb{C}\)-algebra which is representation finite. This means that the number of isomorphism classes of indecomposable finite-dimensional \(\Lambda\)-left modules is finite. Let us fix a set \(\mathcal F\) of representatives for these isomorphism classes. We showed [\textit{C. Riedtmann},
openaire   +2 more sources

LAND COVER CHANGES DETECTION IN POLARIMETRIC SAR DATA USING ALGEBRA, SIMILARITY AND DISTANCE BASED METHODS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Monitoring and surveillance changes around the world need powerful methods, so detection, visualization, and assessment of significant changes are essential for planning and management.
A. Najafi, M. Hasanlou, V. Akbari
doaj   +1 more source

MONITORING OF AEROTECHNOGENIC IMPACT OF SYKTYVKAR TIMBER INDUSTRY COMPLEX

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2021
The relevance of the research is caused by the need to assess the level of impact of a large pulp and paper enterprise located north of the Ezhvinsky district of Syktyvkar on the basis of ecochemical analysis of winter precipitation (snow), to show the ...
Maria I. Vasilevich   +5 more
doaj   +1 more source

LAND COVER CHANGE DETECTION BASED ON GENETICALLY FEATURE AELECTION AND IMAGE ALGEBRA USING HYPERION HYPERSPECTRAL IMAGERY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The Earth has always been under the influence of population growth and human activities. This process causes the changes in land use. Thus, for optimal management of the use of resources, it is necessary to be aware of these changes.
S. T. Seydi, M. Hasanlou
doaj   +1 more source

Koszulness, Krull Dimension and Other Properties of Graph-Related Algebras [PDF]

open access: yes, 2010
The algebra of basic covers of a graph G, denoted by \A(G), was introduced by Juergen Herzog as a suitable quotient of the vertex cover algebra. In this paper we show that if the graph is bipartite then \A(G) is a homogeneous algebra with straightening ...
Constantinescu, Alexandru   +1 more
core   +2 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 ...
José Figueroa-O’Farrill   +3 more
doaj   +1 more source

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