Exact WKB analysis of second-order non-homogeneous linear ordinary differential equations
نویسندگان
چکیده
In this paper we consider the exact WKB analysis of a second-order non-homogeneous linear ordinary differential equation with a large parameter. We give a geometric criterion which guarantees the Borel summability of formal solutions of a non-homogeneous equation; this criterion is described in terms of exact steepest descent paths introduced in [AKT2]. An example related to the BNR equation ([BNR]) is also discussed from this viewpoint. §
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