Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Villar-Liñán María Trinidad"'
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 30, Iss 1, Pp 129-151 (2022)
As a sequel of a previous paper by the authors, we present here a generating theorem for the family of triangulations of an arbitrary punctured surface with vertex degree ≥ 4. The method is based on a series of reversible operations termed reductio
Externí odkaz:
https://doaj.org/article/fbcd297dc9614df382194b1445e5baf9
We present some examples that refute two recent results in the literature concerning the equality of the domination and matching numbers for power and generalized power hypergraphs. In this note we pinpoint the flaws in the proofs and suggest how the
Externí odkaz:
http://arxiv.org/abs/2310.19824
In this paper, Lusternik-Schinrelmann and geometric category of finite spaces are considered. We define new numerical invariants of these spaces derived from the geometric category and present an algorithmic approach for its effective computation. Th
Externí odkaz:
http://arxiv.org/abs/2209.14739
In this paper, we connect four different branches of Mathematics: Statistics, Probability, Algebra and Discrete Mathematics with the objective of introducing new results on Markov chains and evolution algebras obtained by following a relatively new l
Externí odkaz:
http://arxiv.org/abs/2104.02470
Publikováno v:
In Discrete Optimization May 2023 48 Part 1
In this work we present the notion of greyscale of a graph as a colouring of its vertices that uses colours from the real interval [0,1]. Any greyscale induces another colouring by assigning to each edge the non-negative difference between the colour
Externí odkaz:
http://arxiv.org/abs/1612.07552
A greyscale $f$ of a graph $G(V,E)$ is a mapping from $V$ to the interval $[0,1]$ such that $\{0, 1\} \subseteq Im(f)$. This function $f$ induces another mapping $\widehat{f}$ on $E$ by assigning to each edge the non-negative difference of the values
Externí odkaz:
http://arxiv.org/abs/1612.07527
Autor:
Chávez de Diego, María José, Negami, Seiya, Quintero Toscano, Antonio Rafael, Villar Liñán, María Trinidad
As a sequel of a previous paper by the authors, we present here a generating theorem for the family of triangulations of an arbitrary punctured surface with vertex degree ≥ 4. The method is based on a series of reversible operations termed reductio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3272::89787ed77949ad4b9453ea433ee7efb1
Akademický článek
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Autor:
Lawrencenko, Serge, Sulanke, Thom, Villar Liñán, María Trinidad, Zgonnik, Lyudmila Vladimirovna, Chávez de Diego, María José, Portillo Fernández, José Ramón
A triangulation of a surface with fixed topological type is called irreducible if no edge can be contracted to a vertex while remaining in the category of simplicial complexes and preserving the topology of the surface. A complete list of combinatori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3272::0c012b5bd6e64c3a0f83fe31c9427e14