On the Exact Wkb Analysis for the Third Order Ordinary Differential Equations with a Large Parameter By
نویسنده
چکیده
n-th order with n 2 has not yet been well established; its local aspect is clari ed under the assumption that the discriminant of the characteristic equation is of simple zeros ([AKT, Theorem 1.4 and Theorem 1.6]), but its global aspect is far from complete understanding ([BNR], [AKT, Section 2]). The purpose of this paper is to examine the validity of our Ansatz concerning the Stokes geometry ([AKT, Section 2]) through the study of particular di erential equations whose solutions can be explicitly given in the form of integrals.
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