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An effective Chebotarev density theorem for families of number fields, with an application to $\ell$-torsion in class groups. (arXiv:1709.09637v1 [math.NT])
来源于:arXiv
An effective Chebotarev density theorem for a fixed normal extension
$L/\mathbb{Q}$ provides an asymptotic, with an explicit error term, for the
number of primes of bounded size with a prescribed splitting type in $L$. In
many applications one is most interested in the case where the primes are small
(with respect to the absolute discriminant of $L$); this is well-known to be
closely related to the Generalized Riemann Hypothesis for the Dedekind zeta
function of $L$. In this work we prove a new effective Chebotarev density
theorem, independent of GRH, that improves the previously known unconditional
error term and allows primes to be taken quite small (certainly as small as an
arbitrarily small power of the discriminant of $L$); this theorem holds for the
Galois closures of "almost all" number fields that lie in an appropriate family
of field extensions. Such a family has fixed degree, fixed Galois group of the
Galois closure, and in certain cases a ramification restriction on all tame 查看全文>>