N. Crampé

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20242026

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math.CO2024

Bivariate $P$ -polynomial association schemes

P. -A. Bernard, N. Crampe, L. Poulain d'Andecy +2

Bivariate P-polynomial association scheme of type $(I^\pm, I^^{2})$ are defined as a generalization of the P-polynomial association schemes. This generalization is shown to be equivalent t…

math.CO2024

Bivariate $P$ - and $Q$ -polynomial structures of the association schemes based on attenuated spaces

Pierre-Antoine Bernard, Nicolas Crampe, Luc Vinet +2

The bivariate $P$ - and $Q$ -polynomial structures of association schemes based on attenuated spaces are examined using recurrence and difference relations of the bivariate polynomia…

Bivariate P-polynomial association schemes

Bivariate P- and Q-polynomial structures of the association schemes based on attenuated spaces

Bivariate $P$ -polynomial association schemes

Bivariate $P$ - and $Q$ -polynomial structures of the association schemes based on attenuated spaces