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72. Connected graphs of fixed order and size with minimal index : structural considerationsSlobodan Simić, Enzo M. Li Marzi, Francesco Belardo, 2004, izvirni znanstveni članek Ključne besede: spekter grafa, največja lastna vrednost, spektralni radij, indeks grafa, graph spectrum, largest eingenvalue, spectral radius, graph index, nested split graphs
Objavljeno v RUP: 15.10.2015; Ogledov: 4759; Prenosov: 63
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75. Connected graphs of fixed order and size with maximal index : some spectral boundsSlobodan Simić, Francesco Belardo, Enzo M. Li Marzi, Dejan V. Tošić, 2010, objavljeni znanstveni prispevek na konferenci Ključne besede: grafi, spekter, meja, graphs, specter, bound
Objavljeno v RUP: 15.10.2015; Ogledov: 3269; Prenosov: 125
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76. A note on the spectral characterization of dumbbell graphsJianFeng Wang, Qiongxiang Huang, Francesco Belardo, Enzo M. Li Marzi, 2009, izvirni znanstveni članek Ključne besede: grafi, spektri, skoraj regularni grafi, graphs, specters, almost regular graphs
Objavljeno v RUP: 15.10.2015; Ogledov: 5796; Prenosov: 225
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79. Hamiltonian cycles in Cayley graphs whose order has few prime factorsKlavdija Kutnar, Dragan Marušič, D. W. Morris, Joy Morris, Primož Šparl, 2012, izvirni znanstveni članek Opis: We prove that if Cay▫$(G; S)$▫ is a connected Cayley graph with ▫$n$▫ vertices, and the prime factorization of ▫$n$▫ is very small, then Cay▫$(G; S)$▫ has a hamiltonian cycle. More precisely, if ▫$p$▫, ▫$q$▫, and ▫$r$▫ are distinct primes, then ▫$n$▫ can be of the form kp with ▫$24 \ne k < 32$▫, or of the form ▫$kpq$▫ with ▫$k \le 5$▫, or of the form ▫$pqr$▫, or of the form ▫$kp^2$▫ with ▫$k \le 4$▫, or of the form ▫$kp^3$▫ with ▫$k \le 2$▫.
Ključne besede: graph theory, Cayley graphs, hamiltonian cycles
Objavljeno v RUP: 15.10.2013; Ogledov: 5250; Prenosov: 129
 Celotno besedilo (545,91 KB) |
80. On vertex-stabilizers of bipartite dual polar graphsŠtefko Miklavič, 2010, izvirni znanstveni članek Opis: Let ▫$X,Y$▫ denote vertices of a bipartite dual polar graph, and let ▫$G_X$▫ and ▫$G_Y$▫ denote the stabilizers of ▫$X$▫ and ▫$Y$▫ in the full automorphism group of this graph. In this paper, a description of the orbits of ▫$G_X \cap G_Y$▫ in the cases when the distance between ▫$X$▫ and ▫$Y$▫ is 1 or 2, is given.
Ključne besede: dual polar graphs, automorphism group, quadratic form, isotropic subspace
Objavljeno v RUP: 15.10.2013; Ogledov: 3977; Prenosov: 126
Celotno besedilo (187,79 KB) |
