The density of discriminants of quintic rings and fields

Details The density of discriminants of quintic rings and fields The density of discriminants of quintic rings and fields

2010-05-31

arxiv.org/abs/1005.5578v1

Mathematics

Number Theory

Scientific paper

We determine, asymptotically, the number of quintic fields having bounded discriminant. Specifically, we prove that the asymptotic number of quintic fields having absolute discriminant at most X is a constant times X. In contrast with the quartic case, we also show that a density of 100% of quintic fields, when ordered by absolute discriminant, have Galois closure with full Galois group $S_5$. The analogues of these results are also proven for orders in quintic fields. Finally, we give an interpretation of the various constants appearing in these theorems in terms of local masses of quintic rings and fields.

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