ANOTHER MENON-TYPE IDENTITY DERIVED FROM GROUP ACTIONS

MARIUS TĂRNĂUCEANU

Faculty of Mathematics “Al. I. Cuza” University Iași, ROMANIA e-mail: tarnauc@uaic.ro

Abstract

In this short note, we give a new Menon-type identity involving the sum of element or-ders and the sum of cyclic subgroup orders of a finite abelian group. This is based on the weighted form of Burnside’s lemma applied to the action of the power automorphism group.

Keywords

Menon’s identity weighted Burnside’s lemma group action sum of element orders sum of cyclic subgroup orders abelian group