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Asymptotics of number fields and the Cohen--Lenstra heuristics

Jürgen Klüners
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Abstract

We study the asymptotics conjecture of Malle for dihedral groups $D_\ell$ of order $2\ell$, where $\ell$ is an odd prime. We prove the expected lower bound for those groups. For the upper bounds we show that there is a connection to class groups of quadratic number fields. The asymptotic behavior of those class groups is predicted by the Cohen--Lenstra heuristics. Under the assumption of this heuristic we are able to prove the expected upper bounds.

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Jürgen Klüners. 2005-12-13. Asymptotics of number fields and the Cohen--Lenstra heuristics. https://arxiv.org/abs/math/0512260

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