Exploració per autor "Labbate, D."
Ara es mostren els items 1-4 de 4
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A construction of Small (q-1)-Regular Graphs of Girth 8
Abreu, Marien; Araujo Pardo, Gabriela; Balbuena Martínez, Maria Camino Teófila; Labbate, D. (2015-04-21)
Article
Accés obertIn this note we construct a new infinite family of (q - 1)-regular graphs of girth 8 and order 2q(q - 1)(2) for all prime powers q >= 16, which are the smallest known so far whenever q - 1 is not a prime power or a prime ... -
Adjacency matrices of polarity graphs and of other C4-free graphs of large size
Abreu, M.; Balbuena Martínez, Maria Camino Teófila; Labbate, D. (2010)
Article
Accés restringit per política de l'editorialIn this paper we give a method for obtaining the adjacency matrix of a simple polarity graph $G_q$ from a projective plane PG(2,q), where q is a prime power. Denote by ex(n;C₄) the maximum number of edges of a graph on n ... -
Small regular graphs of girth 7
Abreu, Marien; Araujo Pardo, Gabriela; Balbuena Martínez, Maria Camino Teófila; Labbate, D.; Salas Salvado, Jordi (2015-07-01)
Article
Accés obertIn this paper, we construct new infinite families of regular graphs of girth 7 of smallest order known so far. Our constructions are based on combinatorial and geometric properties of (q + 1, 8)-cages, for q a prime power. ... -
Una fórmula explícita para obtener cuadrángulos generalizados y otros grafos pequeños de cintura 8
Abreu, M.; Balbuena Martínez, Maria Camino Teófila; Araujo Pardo, M. Gabriela; Labbate, D. (Universidad de Almería, 2011)
Text en actes de congrés
Accés obertPara cada potencia de primo q, se han constru do (q+1; 8)-jaulas como super cies cu adricas no degeneradas en 4-espacios proyectivos P(4; q). En primer lugar presentamos una construcci on de estos grafos de un modo ...