Determination of $\mathbf{f}(\infty )$ from the Asymptotic Series for $\mathbf{f}(\mathbf{x})$ About $\mathbf{x}=0$

C. M. Bender, S. Boettcher

A difficult and long-standing problem in mathematical physics concerns the determination of the value of $f(\infty )$ from the asymptotic series for $f(x)$ about $x=0$. In the p…