Hans Petersson

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Hans Petersson (24 September 1902 in Bentschen – 9 November 1984 in Münster) was a German mathematician, known for his research on modular and automorphic forms.^[1] He introduced the Petersson inner product and is also known for the Ramanujan–Petersson conjecture.

He received his doctorate in 1925 from the University of Hamburg. His thesis advisor was Erich Hecke.^[2]

In a series of papers, Petersson used the Poincaré series to give a complete construction of all meromorphic functions and differentials on a compact Riemann surface.^[3]