Glasnik matematički, Vol. 37 No. 1, 2002.
Original scientific paper
On groups E_25 * Z_4 as automorphism groups of (100,45,20) symmetric designs
Vinko Buble
Anka Golemac
Tanja Vučičić
Abstract
Nonabelian groups of order 100, that are extensions of the elementary abelian group E25 by the group 4 are considered as possible automorphism groups of symmetric designs with parameters (100,45,20). By the action of these groups new (100,45,20) symmetric designs are constructed. Their full automorphism groups are given.
Keywords
Symmetric designs; automorphism group; orbit structure; indexing
Hrčak ID:
4808
URI
Publication date:
1.6.2002.
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