The Riemann product formula is provided with the function ζ(s) for all complex numbers from 
by substituting –x only
partly for x in the numerator, which is incorrect, because we can
find even negative factorials at the same place instead of the so called
trivial 
from the complex variable z = ±(p + iq) of
the Riemann zeta function, which is applicable for all positive and
negative planes and complex space including 
.
