Über die Fourierkoeffizienten der Siegelschen Eisensteinreihen
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It is well known that the Fourier coefficients ank(T) of Siegel's Eisenstein series of degree n and weight k are rational numbers with bounded denominators , . In this paper we introduce a number bnk(T), which is equal to ank(T) in many cases. This number can be computed in an elementary way. From our explicit formulas for bnk(T) we can easily get results about the denominators of the Fourier coefficients ank(T), which are better than those obtained by Siegel in his difficult paper .
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