No abstract

The Northcott property for special values of Dedekind zeta functions and more general motivic L-functions was defined by Pazuki and Pengo. We investigate this property for any complex evaluation of Dedekind zeta functions. The results are more delicate and subtle than what was proven for the function field case in previous work of Li and the authors, since they include some surprising behavior in the neighborhood of the trivial zeros. The techniques include a mixture of analytic and computer assisted arguments.

Pazuki and Pengo defined a Northcott property for special values of zeta functions of number fields and certain motivic L-functions. We determine the values for which the Northcott property holds over function fields with constant field Fq outside the critical strip. We then use a case by case approach for some values inside the critical strip, notably Re(s) < 1 2 − log 2 log q and for s real such that 1/2 ≤ s ≤ 1, and we obtain a partial result for complex s in the case 1/2 < Re(s) ≤ 1 using recent advances on the Shifted Moments Conjecture over function fields.