Extension of strongly regular graphs.
Gera, Ralucca, Shen, Jian (2008)
The Electronic Journal of Combinatorics [electronic only]
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Displaying similar documents to “The strongly regular (40, 12, 2, 4) graphs.”
Extension of strongly regular graphs.
The strongly regular (45, 12, 3, 3) graphs.
Coolsaet, Kris, Degraer, Jan, Spence, Edward (2006)
The Electronic Journal of Combinatorics [electronic only]
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DISTANCE SPECTRA AND DISTANCE ENERGIES OF ITERATED LINE GRAPHS OF REGULAR GRAPHS
H. S. Ramane, D. S. Revankar, I. Gutman, H. B. Walikar (2009)
Publications de l'Institut Mathématique
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Problems in algebraic combinatorics.
Godsil, C.D. (1994)
The Electronic Journal of Combinatorics [electronic only]
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Graphs with least eigenvalue -2 attaining a convex quadratic upper bound for the stability number
D. M. Cardoso, D. Cvetković (2006)
Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques
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Smallest Regular Graphs of Given Degree and Diameter
Martin Knor (2014)
Discussiones Mathematicae Graph Theory
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In this note we present a sharp lower bound on the number of vertices in a regular graph of given degree and diameter.
A matrix representation of graphs and its spectrum as a graph invariant.
Emms, David, Hancock, Edwin R., Severini, Simone, Wilson, Richard C. (2006)
The Electronic Journal of Combinatorics [electronic only]
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Some Comments on the Eigenspaces of Graphs
Dragoš M. Cvetković (1991)
Publications de l'Institut Mathématique
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Discussing graph theory with a computer. II: Theorems suggested by the computer.
Cvetkovic, Dragos M. (1983)
Publications de l'Institut Mathématique. Nouvelle Série
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On composition of signed graphs
K. Shahul Hameed, K.A. Germina (2012)
Discussiones Mathematicae Graph Theory
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A graph whose edges are labeled either as positive or negative is called a signed graph. In this article, we extend the notion of composition of (unsigned) graphs (also called lexicographic product) to signed graphs. We employ Kronecker product of matrices to express the adjacency matrix of this product of two signed graphs and hence find its eigenvalues when the second graph under composition is net-regular. A signed graph is said to be net-regular if every vertex has constant net-degree,...
Supermagic Graphs Having a Saturated Vertex
Jaroslav Ivančo, Tatiana Polláková (2014)
Discussiones Mathematicae Graph Theory
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A graph is called supermagic if it admits a labeling of the edges by pairwise different consecutive integers such that the sum of the labels of the edges incident with a vertex is independent of the particular vertex. In this paper we establish some conditions for graphs with a saturated vertex to be supermagic. Inter alia we show that complete multipartite graphs K1,n,n and K1,2,...,2 are supermagic.
A quasi-spectral characterization of strongly distance-regular graphs.
Fiol, M.A. (2000)
The Electronic Journal of Combinatorics [electronic only]
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Dynamic cage survey.
Exoo, Geoffrey, Jajcay, Robert (2008)
The Electronic Journal of Combinatorics [electronic only]
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