1939/07/01 by R. A. Rankin · 3 citations
paper · doi:10.1017/s0305004100021101
Suppose that is an integral modular form of dimensions −κ, where κ > 0, and Stufe N , which vanishes at all the rational cusps of the fundamental region, and which is absolutely convergent for Then where a, b, c, d are integers such that ad − bc = 1.