Characters of finite permutation groups and Krein parameters
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DOI: 10.1016/j.jalgebra.2018.07.039
Abstract: Abstract Let G be a transitive permutation group on a finite set Ω. If G is multiplicity-free, then End G ( C [ Ω ] ) is commutative, and Krein parameters q i , j… read more here.
Keywords: finite permutation; characters finite; permutation groups; permutation ... See more keywords
Krein Parameters of Fiber-Commutative Coherent Configurations
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DOI: 10.1142/s1005386720000024
Abstract: For fiber-commutative coherent configurations, we show that Krein parameters can be defined essentially uniquely. As a consequence, the general Krein condition reduces to positive semidefiniteness of finitely many matrices determined by the parameters of a… read more here.
Keywords: coherent configurations; fiber commutative; commutative coherent; krein parameters ... See more keywords