Krein Parameters of Fiber-Commutative Coherent Configurations

Keiji Ito, Akihiro Munemasa

研究成果: Article査読

抄録

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 coherent configuration. We mention its implications in the coherent configuration defined by a generalized quadrangle. We also simplify the absolute bound using the matrices of Krein parameters.

本文言語English
ページ(範囲)1-10
ページ数10
ジャーナルAlgebra Colloquium
27
1
DOI
出版ステータスPublished - 2020 3 1

ASJC Scopus subject areas

  • Algebra and Number Theory
  • Applied Mathematics

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