Regularization for zeta functions with physical applications II

We have proposed a regularization technique and apply it to the Euler product of zeta functions in the part one. In this paper that is the second part of the trilogy, we give another evidence to demonstrate the Riemann hypotheses by using the approximate functional equation. Some other results on the critical line are also presented using the relations between the Euler product and the deformed summation representions in the critical strip. In part three, we will focus on physical applications using these outcomes.