GAZI UNIVERSITY JOURNAL OF SCIENCE, cilt.28, sa.4, ss.683-688, 2015 (ESCI)
In this study, obtaining the matrix analog of the Euler's reflection formula for the classical gamma function we expand the domain of the gamma matrix function and give a infinite product expansion of sin pi xP. Furthermore we define Riemann zeta matrix function and evaluate some other matrix integrals. We prove a functional equation for Riemann zeta matrix function.