A Menon-type identity using Klee's function

Arya Chandran, Neha Elizabeth Thomas, K Vishnu Namboothiri

Menon's identity is a classical identity involving gcd sums and the Euler totient function $\varphi$. A natural generalization of $\varphi$ is the Klee's function ${\Phi }_s$. In this paper we deriv…