Gradewise properties of subgroups of finite groups
2015
Given a subgroup A of a group G and some group-theoretic property θ of subgroups, say that A enjoys the gradewise property θ in G whenever G has a normal series
$$1 = G_0 \leqslant G_1 \leqslant \cdots \leqslant G_t = G$$
such that for each i = 1, …, t the subgroup (A ∩ G i )G i−1/G i−1 enjoys the property θ in G/G i−1. Basing on this concept, we obtain a new characterization of finite supersolvable and solvable groups.
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