In this paper, we prove an arithmetic identity derived by Farkas . We use generalized eta products and their logarithmic derivatives to determine the arithmetic identity.
"A Simple Modular Proof of Farkas' Arithmetic Identity Modulo 4." Missouri J. Math. Sci. 20 (3) 160 - 164, October 2008. https://doi.org/10.35834/mjms/1316032774