Modular 2-subnormal subgroup

Definition
A subgroup of a group is termed a modular 2-subnormal subgroup if it is both a modular subgroup and a 2-subnormal subgroup.

Stronger properties

 * Weaker than::Normal subgroup
 * Weaker than::Permutable 2-subnormal subgroup

Weaker properties

 * Stronger than::Modular subnormal subgroup
 * Stronger than::2-subnormal subgroup
 * Stronger than::Modular subgroup
 * Stronger than::Subnormal subgroup