It is a series of the form ζ(z, x) = ∑n=1∞ x^n/f(n)^(z+1), where z is a complex variable, x is a constant, and f(n) is a multiplicative arithmetic function.
It is a series of the form ζ(z, x) = ∑n=1∞ x^n/f(n)^(z+1), where z is a complex variable, x is a constant, and f(n) is a multiplicative arithmetic function.