Type: Article
Publication Date: 2006-03-31
Citations: 6
DOI: https://doi.org/10.4171/cmh/40
For a positive integer n , we let \varphi(n) and \lambda(n) denote the Euler function and the Carmichael function, respectively. We define \xi(n) as the ratio \varphi(n)/\lambda(n) and study various arithmetic properties of \xi(n) .