Regular sets on the projective line |
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Authors: | Jennifer D Key Johannes Siemons Ascher Wagner |
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Institution: | (1) Department of Mathematics, University of Birmingham, P.O. Box 363, B15 2TT Birmingham, UK;(2) School of Mathematics and Physics, University of East Anglia University Plain, NR4 7TJ Norwich, UK |
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Abstract: | We show that if G is the group PL(2,q)(for q a prime-power) acting on the points of the projective line in the usual way, then for q>27 there is a set of 5 points such that no non-trivial element of G fixes . |
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