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math.NT2020
Multiplier systems for Siegel modular groups
Eberhard Freitag, Adrian Hauffe Waschbüsch
Deligne proved that the weights of Siegel modular forms on any congruence subgroup of the Siegel modular group of genus g>1 must be integral or half integral. We give a different p…
math.NT2014★ 2 cited
Lattices with many Borcherds products
Jan Hendrik Bruinier, Stephan Ehlen, Eberhard Freitag
We prove that there are only finitely many isometry classes of even lattices of signature for which the space of cusp forms of weight for the Weil representatio…