On non-symmetric commutative association schemes with exactly one pair of non-symmetric relations

• Main Authors: Chia, Gek Ling, Kok, Wai Keong
• Format: Article
• Published: Elsevier 2006
• Subjects: Q Science (General); QA Mathematics
• Online Access: http://eprints.um.edu.my/25660/; https://doi.org/10.1016/j.disc.2006.06.005

For a given non-symmetric commutative association scheme, by fusing all the non-symmetric relations pairwise with their symmetric counterparts, we can obtain a new symmetric association scheme. In this paper, we introduce a set of feasibility and realizability conditions for a class e symmetric asso...