Glasnik Matematicki, Vol. 34, No.2 (1999), 129-145.
ENUMERATION OF SYMMETRIC (69,17,4) DESIGNS
ADMITTING Z6 AS AN AUTOMORPHISM GROUP
Department of Mathematics, Faculty of Philosophy in Rijeka,
Omladinska 14, 51000 Rijeka, Croatia
Abstract. All symmetric (69,17,4) designs admitting the
cyclic group of order 6 as an automorphism group are classified and
their full automorphism groups are determined.
1991 Mathematics Subject Classification.
Key words and phrases. Symmetric design, automorphism
group, orbit structure.
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