Non-split sharply 2-transitive groups of odd positive characteristic
arxiv(2023)
摘要
It is well-known that every sharply 2-transitive group of characteristic 3
splits. Here we construct the first examples of non-split sharply 2-transitive
groups in odd positive characteristic p, for sufficiently large primes p.
Furthermore, we show that any group without 2-torsion can be embedded into a
non-split sharply 2-transitive group of characteristic p for all sufficiently
large primes p, yielding 2^ℵ_0 many pairwise non-isomorphic
countable non-split sharply 2-transitive groups in any sufficiently large
characteristic.
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