An identity about Gamma and Riemann function

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we know that \Gamma (s)= \int_{0}^{\infty}dxe^{-x}x^{s-1}

however every factor of the Riemann Zeta can be obtained also from a Mellin transform

\int_{0}^{\infty}dxf(x)x^{s-1} =(1-p^{-s})^{-1}

where f(x) is the distribution

\sum_{n=0}^{\infty}x \delta (x-p^{-n})

is there any connection between Gamma and Riemann Zeta function i mean ,appart from appearing on the functional equation, also the Gamma function satisfy a relfection formula relating 's' and '1-s'
 
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