On designs related to coherent configurations of type (224)
نویسندگان
چکیده
منابع مشابه
Coherent configurations
In Section 2, after giving the basic definitions and some elementary consequences, we introduce two fundamental algebraic structures associated with a coherent configuration, namely, the boolean algebra of admissable relations and the adjacency ring. The action of a group on a finite set induces the structure of a coherent configuration in the set, and in this situations, which we refer to as t...
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Let F be a (0, 1) matrix. A (0, 1) matrix M is said to have F as a configuration if there is a submatrix of M which is a row and column permutation of F . We say that a matrix M is simple if it has no repeated columns. For a given v ∈ N, we shall denote by forb(v,F) the maximum number of columns in a simple (0, 1) matrix with v rows for which F does not occur as a configuration. We say that a m...
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ژورنال
عنوان ژورنال: Discrete Mathematics
سال: 1991
ISSN: 0012-365X
DOI: 10.1016/0012-365x(91)90319-w