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Electronic Notes in Discrete Mathematics, ISSN 1571-0653, 09/2014, Volume 46, Issue 1, pp. 3 - 10
Denumerants of numerical semigroups are known to be difficult to obtain, even with small embedding dimension of the semigroups. In this work we give some... 
Denumerant | numerical semigroup | factorization | L-shapes | Numerical semigroup | Factorization | 20M Semigroups | Teoria de grups | Semigrups | Àlgebra | Matemàtiques i estadística | Semigroups | Àrees temàtiques de la UPC
Journal Article
Semigroup Forum, ISSN 0037-1912, 6/2014, Volume 88, Issue 3, pp. 670 - 688
We recall L-shapes, which are minimal distance diagrams, related to weighted 2-Cayley digraphs, and we give the number and the relation between minimal... 
Algebra | Curve plane semigroup | Cayley digraph | Numerical semigroup | L-shape | Frobenius number | Mathematics | Symmetric | Free | MATHEMATICS | NETWORKS | Teoria de grups | Semigrups | 20M Semigroups | Àlgebra | Matemàtiques i estadística | Semigroups | Àrees temàtiques de la UPC
Journal Article
数学学报:英文版, ISSN 1439-8516, 1997, Volume 13, Issue 1, pp. 97 - 104
<正> Let S be a semigroup with identity and zero,(S)the category of finitely generatedprojective S-systems.In this paper,the Whitehead group K1S of S is... 
projective | generated | K-theory;Finitely | Semigroup;Algebraic | S-system | O152.7 | Algebraic K-theory | Mathematics, general | Mathematics | Semigroup | Finitely generated projective S -system | 20M | Finitely generated projective S-system | Studies | Algebraic group theory | HyperText Markup Language | HTML | Format | Categories | Mathematical analysis | Color
Journal Article
Communications in Algebra, ISSN 0092-7872, 06/2008, Volume 36, Issue 7, pp. 2487 - 2502
A class of regular semigroups is an e-variety if it is closed under homomorphic images, regular subsemigroups, and direct products. Let S be a regular... 
ist-semigroup | e-variety | ist-variety | ist-operation | Inverse transversal | 20M | Ist-operation | Ist-semigroup | Ist-variety | MATHEMATICS | inverse transversal | INVERSE TRANSVERSALS
Journal Article
2014
We give an algorithm to compute the set of primitive elements for an embedding dimension three numerical semigroups. We show how we use this procedure in the... 
20M Semigroups | Teoria de grups | Semigrups | Àlgebra | L-shapes | Numerical semigroup | Matemàtiques i estadística | Semigroups | tame degree | primitive elements | Àrees temàtiques de la UPC
Publication
Rocky Mountain Journal of Mathematics, ISSN 0035-7596, 12/1974, Volume 4, Issue 4, pp. 597 - 620
Journal Article
Aequationes Mathematicae, ISSN 0001-9054, 02/1995, Volume 49, Issue 1, pp. 205 - 213
Journal Article
Communications in Algebra, ISSN 0092-7872, 04/2001, Volume 29, Issue 6, pp. 2341 - 2361
A simple and nice structure theorem for orthogroups was given by Petrich in 1987. In this paper, we consider a generalized orthogroup, that is, a... 
1991 AMS Subject Classification: 20M 16 | Bands | Orthogroups | Quasi-regular semigroups | Generalized orthogroups | MATHEMATICS | generalized orthogroups | bands | quasi-regular semigroups | orthogroups | REGULAR-SEMIGROUPS
Journal Article
International Journal of Computer Mathematics, ISSN 0020-7160, 01/2000, Volume 75, Issue 2, pp. 137 - 141
The paper presents a method of a fixed point generation of language varieties and the method is illustrated by the variety of finite and cofinite language. 
variety of languages | fixed points of mappings | Free monoid | language | word | D.3.2 | 20M | 68Q | MATHEMATICS, APPLIED | free monoid
Journal Article
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