Duality of translation association schemes coming from certain actions

Details Duality of translation association schemes coming from certain actions Duality of translation association schemes coming from certain actions

2011-08-24

arxiv.org/abs/1108.4947v1

Mathematics

Combinatorics

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Scientific paper

Translation association schemes are constructed from actions of finite groups on finite abelian groups satisfying certain natural conditions. It is also shown that the mere existence of maps from finite groups to themselves sending each element in their groups to its `adjoint' entails the self-duality of the constructed association schemes. Many examples of these, including Hamming scheme and sesquilinear forms schemes, are provided. This con- struction is further generalized to show the duality of the association schemes coming from actions of two finite groups on the same finite abelian group. An example of this is supplied with weak Hamming schemes.

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