Reduction mod $\ell$ of Theta Series of Level $\ell^n$

dc.creatorSkoruppa, Nils-Peter
dc.date2008-07-29
dc.date2008-10-21
dc.date.accessioned2026-07-07T10:11:23Z
dc.date.available2026-07-07T10:11:23Z
dc.descriptionIt is proved that the theta series of an even lattice whose level is a power of a prime $\ell$ is congruent modulo $\ell$ to an elliptic modular form of level~1. The proof uses arithmetic and algebraic properties of lattices rather than methods from the theory of modular forms. The methods presented here may therefore be especially pleasing to those working in the theory of quadratic forms, and they admit generalizations to more general types of theta series as they occur e.g. in the theory of Siegel or Hilbert modular forms.
dc.descriptionCorrection of several typos
dc.identifierhttps://arxiv.org/abs/0807.4694
dc.identifierhttp://arxiv.org/abs/0807.4694
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171848
dc.subjectNumber Theory
dc.subject11F11; 11F27; 11F33
dc.titleReduction mod $\ell$ of Theta Series of Level $\ell^n$
dc.typetext

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