6.53 (1978)

Solved

A group $G$ of the form $G = F \rtimes H$ is said to be a Frobenius group with kernel $F$ and complement $H$ if $H \cap H^g = 1$ for any $g \in G \setminus H$ and $F \setminus \{1\} = G \setminus \bigcup_{g \in G} H^g$. What can be said about the kernel and the complement of a Frobenius group? In particular, which groups can be kernels? complements?

Progress

Every group can be embedded into the kernel of a Frobenius group, and every right-orderable group can be a complement in a Frobenius group (V. V. Bludov, Siberian Math. J., 38, no. 6 (1997), 1054–1056).

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