Difference between revisions of "Dedekind zeta function"
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Latest revision as of 18:52, 24 May 2016
Let $F$ be a a finite field extension of the rational numbers. The Dedekind zeta function of $F$ is $$\zeta_F(z)=\displaystyle\sum_{\mathfrak{a}} N(\mathfrak{a})^{-z}; \mathrm{Re}(z)>1,$$ where the sum is over the nontrivial ideals $\mathfrak{a}$ of the ring of integers $\mathcal{O}_F$ of $F$ and $N(\mathfrak{a})$ denotes the norm of the ideal $\mathfrak{a}$.
Properties
Theorem: The following Euler product holds: $$\zeta_F(z)=\displaystyle\prod_{\mathfrak{p}} \dfrac{1}{1-N(\mathfrak{p})^{-z}},$$ where $\mathfrak{p}$ denotes a nontrivial prime ideal of $\mathcal{O}_F$.
Proof: █
