Results 1 to 10 of about 2,981,187 (316)

The universal cover of an algebra without double bypass [PDF]

open access: green, 2006
Let A be a basic finite dimensional and connected algebra over an algebraically closed field k with zero characteristic. If the ordinary quiver of A has no double bypasses, we show that A admits a Galois covering which satisfies a universal property with
Adams   +21 more
core   +6 more sources

Very well-covered graphs via the Rees algebra [PDF]

open access: greenMediterranean Journal of Mathematics, 2023
A very well-covered graph is a well-covered graph without isolated vertices such that the size of its minimal vertex covers is half of the number of vertices.
Marilena Crupı, Antonino Ficarra
openalex   +3 more sources

On Max-Plus Algebra and Its Application on Image Steganography

open access: yesThe Scientific World Journal, 2018
We propose a new steganography method to hide an image into another image using matrix multiplication operations on max-plus algebra. This is especially interesting because the matrix used in encoding or information disguises generally has an inverse ...
Kiswara Agung Santoso   +2 more
doaj   +2 more sources

Probabilistic Thread Algebra [PDF]

open access: yesScientific Annals of Computer Science, 2015
We add probabilistic features to basic thread algebra and its extensions with thread-service interaction and strategic interleaving. Here, threads represent the behaviours produced by instruction sequences under execution and services represent the ...
J.A. Bergstra, C.A. Middelburg
doaj   +5 more sources

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., Pulmannová S.
doaj   +2 more sources

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

open access: diamondThe 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   +2 more sources

On the Hilbert series of vertex cover algebras of Cohen-Macaulay bipartite graphs [PDF]

open access: green, 2009
We study the Hilbert function and the Hilbert series of the vertex cover algebra $A(G)$, where $G$ is a Cohen-Macaulay bipartite graph.Comment: 12 ...
Ion, Cristian
core   +5 more sources

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

open access: diamondThe 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   +3 more sources

On the Hilbert series of vertex cover algebras of unmixed bipartite graphs [PDF]

open access: green, 2010
We compute the reduced Gr\"{o}bner basis of the toric ideal with respect to a suitable monomial order and we study the Hilbert series of the vertex cover algebra $A(G)$, where $G$ is an unmixed bipartite graph without isolated vertices.Comment: 8 ...
Ion, Cristian
core   +3 more sources

Reticulation of Quasi-commutative Algebras [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
The commutator theory, developed by Fresee and McKenzie in the framework of a congruence-modular variety $\mathcal{V}$, allows us to define the prime congruences of any algebra $A\in \mathcal{V}$ and the prime spectrum $Spec(A)$ of $A$.
G. Georgescu
doaj   +1 more source

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