Czechoslovak Mathematical Journal, first online, pp. 1-7
Breaking points in the poset of conjugacy classes of subgroups of a finite group
Received October 24, 2018. Published online June 3, 2019.
Abstract: We determine the finite groups whose poset of conjugacy classes of subgroups has breaking points. This leads to a new characterization of the generalized quaternion 2-groups. A generalization of this property is also studied.
Keywords: breaking point; poset of conjugacy classes of subgroups; interval; generalized quaternion 2-group