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For Which Finite Groups G is the Lattice ℒ(G) of Subgroups Gorenstein?
Published online by Cambridge University Press: 22 January 2016
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Let G be a finite group and ℒ(G) the lattice consisting of all subgroups of G. It is well known that ℒ(G) is distributive if and only if G is cyclic (cf. [2, p. 173]). Moreover, the classical result of Iwasawa [8] says that ℒ(G) is pure if and only if G is supersolvable. Here, a finite lattice is called pure if all of maximal chains in it have same length and a finite group G is called supersolvable if ℒ(G) has a maximal chain which consists of normal subgroups of G.
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- Copyright © Editorial Board of Nagoya Mathematical Journal 1987
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