In this paper, we shall improve the bounds on Euler–Zagier type double zeta-functions in
the region
which
provides a positive answer to a conjecture posed by Kiuchi and Tanigawa (2006). As
an application, we improve the error term that appears in the asymptotic formula for
the moment of the double zeta-function.
Keywords
Double zeta-function, Perron's formula, upper bound, mean
square theorem