用normal subgroup造句子，“normal subgroup”造句

A note on the zeros of irreducible characters out of a normal subgroup;

The influence of c-normal subgroup on the structure of super solvable group

In this paper, based on the relation between normal subgroup and congruence, another depiction of normal series power semigroup is given from the angles of congruence by the method of analogy.

Character of group which only have n nontrivial normal subgroups