Abstract
Consider an interval [H,G] in the lattice of subgroups of a finite soluble groupG. We define a certain set of subgroups in the lattice [H,G], and prove that they are conjugate inG. ForH=1 one gets the prefrattini subgroups ofG.
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Hauck, P., Kurzweil, H. A lattice theoretic characterization of prefrattini subgroups. Manuscripta Math 66, 295–301 (1990). https://doi.org/10.1007/BF02568498
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DOI: https://doi.org/10.1007/BF02568498