Geodesic
Reconstructing a generalized quadrangle from its distance two association scheme
Journal of Algebraic Combinatorics, Tome 2 (1993) no. 3, pp. 261-266.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: Payne [4] constructed an association scheme from a generalized quadrangle with a quasiregular point. We show that an association scheme with appropriate parameters and satisfying an assumption about maximal cliques must be one of these schemes arising from a generalized quadrangle.
Keywords: association scheme, generalized quadrangle, quasiregular point 
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     author = {Hobart, Sylvia A. and Payne, Stanley E.},
     title = {Reconstructing a generalized quadrangle from its distance two association scheme},
     journal = {Journal of Algebraic Combinatorics},
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Hobart, Sylvia A.; Payne, Stanley E. Reconstructing a generalized quadrangle from its distance two association scheme. Journal of Algebraic Combinatorics, Tome 2 (1993) no. 3, pp. 261-266. http://geodesic.mathdoc.fr/item/JAC_1993__2_3_a2/