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  2. File:Symmetric group 4; Cayley graph 1,5,21 (adjacency matrix ...

    en.wikipedia.org/wiki/File:Symmetric_group_4;...

    Description: Adjacency matrix of the Cayley graph of S 4, . generated by blue: (12) green: (13) red: (14) This is the corresponding graph, called the Nauru graph: . The red, green and blue squares form the permutation matrices, indexed 1, 5 and 21 in the following file.

  3. File:Graph for example adjacency matrix.svg - Wikipedia

    en.wikipedia.org/wiki/File:Graph_for_example...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  4. Adjacency matrix - Wikipedia

    en.wikipedia.org/wiki/Adjacency_matrix

    In graph theory and computer science, an adjacency matrix is a square matrix used to represent a finite graph. The elements of the matrix indicate whether pairs of vertices are adjacent or not in the graph. In the special case of a finite simple graph, the adjacency matrix is a (0,1)-matrix with zeros on its diagonal.

  5. Complete bipartite graph - Wikipedia

    en.wikipedia.org/wiki/Complete_bipartite_graph

    The complete bipartite graph K m,n has a vertex covering number of min{m, n} and an edge covering number of max{m, n}. The complete bipartite graph K m,n has a maximum independent set of size max{m, n}. The adjacency matrix of a complete bipartite graph K m,n has eigenvalues √ nm, − √ nm and 0; with multiplicity 1, 1 and n + m − 2 ...

  6. Hypergraph - Wikipedia

    en.wikipedia.org/wiki/Hypergraph

    A parallel for the adjacency matrix of a hypergraph can be drawn from the adjacency matrix of a graph. In the case of a graph, the adjacency matrix is a square matrix which indicates whether pairs of vertices are adjacent .

  7. Minimum rank of a graph - Wikipedia

    en.wikipedia.org/wiki/Minimum_rank_of_a_graph

    More generally, a generalized adjacency matrix is any symmetric matrix of real numbers with the same pattern of nonzeros off the diagonal (the diagonal elements may be any real numbers). The minimum rank of G {\displaystyle G} is defined as the smallest rank of any generalized adjacency matrix of the graph; it is denoted by mr ⁡ ( G ...

  8. Graph (discrete mathematics) - Wikipedia

    en.wikipedia.org/wiki/Graph_(discrete_mathematics)

    The edges of a graph define a symmetric relation on the vertices, called the adjacency relation. Specifically, two vertices x and y are adjacent if {x, y} is an edge. A graph is fully determined by its adjacency matrix A, which is an n × n square matrix, with A ij specifying the number of connections from vertex i to vertex j.

  9. Berlekamp–Van Lint–Seidel graph - Wikipedia

    en.wikipedia.org/wiki/Berlekamp–van_Lint...

    This graph is the Cayley graph of an abelian group. Among abelian Cayley graphs that are strongly regular and have the last two parameters differing by one, it is the only graph that is not a Paley graph. [2] It is also an integral graph, meaning that the eigenvalues of its adjacency matrix are integers. [3]

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