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math.NT2014★ 2 cited
An explicit bound for the first sign change of the Fourier coefficients
YoungJu Choie, Sanoli Gun, Winfried Kohnen
We give an explicit upper bound for the first sign change of the Fourier coefficients of an arbitrary non-zero Siegel cusp form of even integral weight on the Siegel modular gr…
math.NT2010★ 3 cited
On the canonical decomposition of generalized modular functions
Winfried Kohnen, Geoffrey Mason
The authors have conjectured (\cite{KoM}) that if a normalized generalized modular function (GMF) , defined on a congruence subgroup , has integral Fourier coefficients, then…