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On the Maximum Order of the Group of a Tournament

Published online by Cambridge University Press:  20 November 2018

Myron Goldberg
Affiliation:
University of Alberta, Edmonton
J. W. Moon
Affiliation:
University of Alberta, Edmonton
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A (round-robin) tournament Tn consists of n nodes p1, p2, …, Pn such that each pair of distinct nodes pi and pj is joined by one of the oriented arcs or . If the arc is in Tn, then we say that pi. dominates pj. The set of all dominance-preserving permutations a of the nodes T form a group, the automorphism group G(T ) of Tn. It is known (see [1]) that there exist tournaments Tn whose group n G(Tn) is abstractly isomorphic to a given group H if and only if the order g(H) of H is odd.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1966

References

1. Moon, J. W., Tournaments with a given automorphism group. Canad. J. Math., 16, (1964), pages 485-489.Google Scholar
2. Wielandt, H., Finite Permutation Groups. Trans, by Bercov, R., Academic Press, New York, (1964), page 5.Google Scholar