设G是一个群,若对于任意x,y∈X(?)G且x≠y,都有xy≠yx,则称X是G的一个非交换集.进一步,如果对于G中的任意其他非交换集Y,都有|X|≥|Y|,那么称X是G的一个极大非交换集.本文确定了广义超特殊p-群G的极大非交换集的势.
Let G be a group.A set X of elements of G is said to be non-commuting if xy≠yx for any x,y∈X with x≠y.If |X|≥|Y| for any other non-commuting set Y in G,then X is said to be a maximal non-commuting set.In this paper,the bound for the cardinality of a maximal non-commuting set in a generalized extraspecial p-group is determined.