Menon-type identities concerning subsets of the set $\{1,2,\ldots,n\}$
László Tóth·2021-09-14·via math.CO updates on arXiv.org
We prove certain Menon-type identities associated with the subsets of the set $\{1,2,\ldots,n\}$ and related to the functions $f$, $f_k$, $Φ$ and $Φ_k$, defined and investigated by Nathanson (2007).