University of Mostar, Matice hrvatske bb, 88000 Mostar,
Bosnia and Herzegovina
Abstract. This article presents an examination of the possibility that group A5 operates on a symmetric design with parameters (115,19,3) as its automorphism group. The method based on the coset enumeration in a group is used.
1991 Mathematics Subject Classification. 05B05.
Key words and phrases. Symmetric design, automorphism group, orbit structure, indexing.