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Let $k$ be an odd integer. Let $S_0(N, \chi)$ denote the subspace of $S_{3/2}(N, \chi)$ spanned by theta series if $k=3$, and let $S_0(N, \chi)=0$ if $k>3$. Let $S_0'(N, \chi)$ denote the orthogonal complement of $S_0(N, \chi)$ in $S_{3/2}(N, \chi)$. Then $S_0'(N, \chi) = \oplus_F S_{k/2}(N, \chi, F),$ where $F$ runs over all newforms of weight $k-1$, level dividing $N/2$ and character $\chi^2$, and the space $S_{k/2}(N, \chi, F)$ is defined by $S_{k/2}(N, \chi, F) =\{ g \in S_0'(N, \chi): T_{p^2} g = \lambda_p(F) g \quad \forall\, p\nmid N\}.$

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• Review status: beta
• Last edited by Nicolás Sirolli on 2014-09-10 14:30:18
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