the relative commutativity degree d(C,D8), where C is a cyclic maximal subgroup

of D8. A final conjecture is opened for the groups with few nontrivial values of d(C,G)....

The purpose of this paper i s to give a relati on b etween the notion of the commutativity

degr ee of a fini te gr oup G (denoted by d(G)) and that o f i s o cl i n i s m b etween G and

an extr a s p eci al p ...