数学季刊 ›› 2015, Vol. 30 ›› Issue (3): 381-388.doi: 10.13371/j.cnki.chin.q.j.m.2015.03.009
摘要: Given a maximal subgroup M of a group G, a θ*-completion C of M is called an s*-completion if either C = G or there exists a subgroup D of G which is not a θ*-completion of M such that D contains C as a maximal subgroup. In this paper, we obtain several results on s*-completions which imply G to be solvable or supersolvable.
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