A Cayley graph = Cay(G, S) is called a graphical regular representation of the group G if Aut = G. One long-standing open problem about Cayley graphs is to determine which Cayley graphs are graphical regular representations of the corresponding groups. A simple necessary condition for to be a graphi
Regular representations of finite groups as automorphism groups of k-tournaments
β Scribed by S. Marshall
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 104 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0364-9024
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β¦ Synopsis
Abstract
It was shown by Babai and Imrich [2] that every finite group of odd order except $Z^2_3$ and $Z^3_3$ admits a regular representation as the automorphism group of a tournament. Here, we show that for k β₯ 3, every finite group whose order is relatively prime to and strictly larger than k admits a regular representation as the automorphism group of a kβtournament. Our constructions are elementary, suggesting that the problem is significantly simpler for kβtournaments than for binary tournaments. Β© 2002 Wiley Periodicals, Inc. J Graph Theory 41: 238β248, 2002
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