engleski

Some new Hadamard designs with 79 points admitting automorphisms of order 13 and 19

We have proved that there exists at least 2091 mutually nonisomorphic symmetric (79,39,19)-designs. In particular, 1896 of them admit an action of the nonabelian group of order 57, and an additional 194 an action of the nonabelian group of order 39.

Hadamard design; Automorphism group; Tactical decomposition; Orbit structure

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