Abstract.Discrete power series methods were introduced and their regularity results were developed by Watson [Analysis (Munich), 18(1): 97–102, 1998]. It was shown by Watson that discrete power series ...
When $f(z)$ is given by a known power series expansion, it is possible to construct the power series expansion for $f(z; p) = e^{-pz}f(z)$. We define $p_{opt}$ to be ...