The number of automorphism of a finite abelian group of rank two
Amit Sehgal, Sarita Sehgal, Poonam Kumar Sharma · Journal of Discrete Mathematical Sciences and Cryptography · 2016
In this paper, (1) we deduce a formula for the number of automorphism of finite Abelian p-group of rank two and (2) a formula for the number of auto-morphism of finite Abelian group of rank two Zm×Zn, by using partition of number of cyclic subgroups of group .