# Euler product on the critical line

can the Euler product be defined on the critical line $1/2+it$ ??

i mean the Euler product for the Riemann Zeta function $$\zeta(s)= \prod _{n}(1-p^{-s})^{-1}$$

for example from the representation of the Dirichlet generating function for the Rieman zeta would we have that ??

$$\prod _{n\le x}(1-p^{-0.5-it})^{-1} =\exp\left(\sum_{n \le x}\frac{\Lambda(n)}{n^{0.5+it}}\right)$$

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–  David Speyer Jan 14 '13 at 18:38

No. See http://mathoverflow.net/questions/63714/ ${ }$ ${ }$ ${ }$ ${ }$