The partition function $p(n)$ in terms of the classical Möbius function

Abstract: In this paper, we investigate decompositions of the partition function $p(n)$ from the additive theory of partitions considering the famous M\"{o}bius function $\mu(n)$ from multiplicative number theory. Some combinatorial interpretations are given in this context. Our work extends several analogous identities proved recently relating $p(n)$ and Euler's totient function $\varphi(n)$. Keywords: Lambert series; M\"{o}bius function; $q$-series; partition function