The classical absolute-value conjecture for Xi zeroes

Let $\Xi(\chi,t)=\Lambda(\chi,1/2+it)$ for an abelian character $\chi$ over a number field. The classical absolute-value conjecture. For every $e\geq0$, there are at most two zeroes of $\Xi(\chi,t)$, counted without multiplicity, having absolute value $e$.

This is presented as the direct classical analogue of the characteristic-$p$ reciprocal-zero conjecture. The bound of two reflects the functional equation sending $t$ to $-t$, while the conjecture remains unproved.