On relations among Dirichlet series whose coefficients are class numbers of binary cubic forms

Yasuo Ohno; Takashi Taniguchi; Satoshi Wakatsuki

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arXiv · 0711.0499

On relations among Dirichlet series whose coefficients are class numbers of binary cubic forms

Yasuo Ohno·Takashi Taniguchi·Satoshi Wakatsuki

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Abstract

We study the class numbers of integral binary cubic forms. For each $SL_2(Z)$ invariant lattice $L$, Shintani introduced Dirichlet series whose coefficients are the class numbers of binary cubic forms in $L$. We classify the invariant lattices, and investigate explicit relationships between Dirichlet series associated with those lattices. We also study the analytic properties of the Dirichlet series, and rewrite the functional equation in a self dual form using the explicit relationship.

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Yasuo Ohno, Takashi Taniguchi, Satoshi Wakatsuki. 2007-11-04. On relations among Dirichlet series whose coefficients are class numbers of binary cubic forms. https://arxiv.org/abs/0711.0499

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