Multi-level Gevrey solutions of singularly perturbed linear partial differential equations

Abstract

We study the asymptotic behavior of the solutions related to a family of singularly perturbed linear partial differential equations in the complex domain. The analytic solutions obtained by means of a Borel-Laplace summation procedure are represented by a formal power series in the perturbation parameter. Indeed, the geometry of the problem gives rise to a decomposition of the formal and analytic solutions so that a multi-level Gevrey order phenomenon appears. This result leans on a Malgrange-Sibuya theorem in several Gevrey levels.

Article information

Source
Adv. Differential Equations, Volume 21, Number 7/8 (2016), 767-800.

Dates
First available in Project Euclid: 3 May 2016