Department of Mathematics, Temple University, Philadelphia, Pennsylvania 19122 ; Department of Mathematics, Technion-Israel Institute of Technology, 32000 Haifa, Israel
Abstract:
In 1916 Ramanujan observed a remarkable congruence: . The modern point of view is to interpret the Ramanujan congruence as a congruence between the Fourier coefficients of the unique normalized cusp form of weight and the Eisenstein series of the same weight modulo the numerator of the Bernoulli number . In this paper we give a simple proof of the Ramanujan congruence and its generalizations to forms of higher integral and half-integral weights.