"Intermediate notions between [[subgroup having a left transversal that is also a right transversal]] and [[subgroup having a transversal comprising involutions]]","Intermediate notions between [[subgroup having a left transversal that is also a right transversal]] and [[subgroup having a transversal comprising involutions]]#"
"Subgroup having a 1-closed transversal","Subgroup having a 1-closed transversal"
"Subgroup having a symmetric transversal","Subgroup having a symmetric transversal"