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Published online by Cambridge University Press: 20 November 2018
We prove that the Frattini subgroups are trivial for finite groups whose orders are not divisible by squares of a prime.
If G is a group, we define its Frattini subgroup ϕ(G) as the intersection of all the maximal subgroups of G. An element x ∈ G is a nongenerator of G if whenever G = < X, x >, where X ⊆ G, then G = < X >.