Abstract
In this paper we study a relation between zero-density estimates of a Hecke L-function and fractional moments of the L-function on or near Res=1/2. As a consequence, we prove that a bound of the type∫T2T|L(1/2+it)|2kdt≪T(logT)A for some 0<k<1 and A>0 is sufficient to deduce a universality theorem for Hecke L-functions.
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