The lattice of solid -subgroups of a retractable group
Richard D. Byrd, Justin T. Lloyd, Roberto A. Mena, J. Roger Teller (1978)
Czechoslovak Mathematical Journal
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Richard D. Byrd, Justin T. Lloyd, Roberto A. Mena, J. Roger Teller (1978)
Czechoslovak Mathematical Journal
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Milan Jasem (1987)
Mathematica Slovaca
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Paul F. Conrad (1965)
Czechoslovak Mathematical Journal
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Luis M. Ezquerro (1993)
Rendiconti del Seminario Matematico della Università di Padova
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Rendiconti del Seminario Matematico della Università di Padova
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de Falco, M., de Giovanni, F. (2001)
Serdica Mathematical Journal
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A subgroup H of a group G is said to be quasinormal if HX = XH for all subgroups X of G. In this article groups are characterized for which the partially ordered set of quasinormal subgroups is decomposable.