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arXiv · 1903.07095

Signed Shintani cones for number fields with one complex place

Milton Espinoza
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Abstract

We give a signed fundamental domain for the action on $\mathbb{C}^*\times \mathbb{R}_+^{n-2}$ of the totally positive units $E(k)_+$ of a number field $k$ of degree $n$ and having exactly one pair of complex embeddings. This signed fundamental domain, built of $k$-rational simplicial cones, is as convenient as a true fundamental domain for the purpose of studying Dedekind zeta functions. However, while there is no general construction of a true fundamental domain, we construct a signed fundamental domain from any set of fundamental units of $k$.

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Milton Espinoza. 2019-03-17. Signed Shintani cones for number fields with one complex place. https://doi.org/10.1016/j.jnt.2014.06.003

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