Over the non-existence of sharply 3-transitive permutation sets containing sharply 2-transitive permutation subsets |
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Authors: | Pasquale Quattrocchi |
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Institution: | (1) Dipartimento di Matematica, Pura ed Applicata dell'Università, via G. Campi 213/B, 41100 Modena, Italy |
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Abstract: | The following results are proved: Let E be a finite set, ¦E¦>4, and let G be a sharply 3-transitive permutation set on E. Then G contains no subset which is a sharply 2-transitive permutation set on E (Theorem 1). In the case when G is a sharply 3-transitive permutation group which is also planar, the finiteness condition on E can be dropped (Theorem 2).Dedicated to G. Zappa on his 70th birthdayResearch done within the activity of GNSAGA of CNR, supported by the 40% grants of MPI. |
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