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Approximations for the late coefficients in asymptotic expansions arising in the method of steepest descents

Approximations for the late coefficients in asymptotic expansions arising in the method of steepest descents

We set out two kinds of calculations for estimating the behavior of the late coefficients in the asymptotic expansions which arise in the method of steepest descents T Both are based on the reformulation of this method due to Berry and Howls, The first kind of calculation yields asymptotic expressions …