A Note on the Parity of P(n) Jump To References Section Authors Hansraj Gupta DOI: https://doi.org/10.18311/jims/1946/17116 Abstract In 1920, Mac Mahon* gave a method for determining the parity of p(n)-the number of unrestricted partitions of n. He made use of Jacobi's Elliptic products. His results are here obtained in a simpler and more direct way.