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9.59 (1984)

Solved

(W. Gaschütz). Prove that the formation generated by a finite group has finite lattice of subformations.

Contributor: A. N. Skiba, L. A. Shemetkov

Progress

Counterexamples are constructed (V. P. Burichenko, J. Algebra, 372 (2012), 428–458).

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