Home Small divisors effects in some singularly perturbed initial value problem with irregular singularity
Article
Licensed
Unlicensed Requires Authentication

Small divisors effects in some singularly perturbed initial value problem with irregular singularity

  • Stephane Malek ORCID logo EMAIL logo
Published/Copyright: November 24, 2022

Abstract

We examine a nonlinear initial value problem both singularly perturbed in a complex parameter and singular in complex time at the origin. The study undertaken in this paper is the continuation of a joined work with Lastra published in 2015. A change of balance between the leading and a critical subdominant term of the problem considered in our previous work is performed. It leads to a phenomenon of coalescing singularities to the origin in the Borel plane with respect to time for a finite set of holomorphic solutions constructed as Fourier series in space on horizontal complex strips. In comparison to our former study, an enlargement of the Gevrey order of the asymptotic expansion for these solutions relatively to the complex parameter is induced.

MSC 2010: 35C10; 35C20

References

[1] W. Balser, Formal Power Series and Linear Systems of Meromorphic Ordinary Differential Equations, Universitext, Springer, New York, 2000. Search in Google Scholar

[2] B. Braaksma and L. Stolovitch, Small divisors and large multipliers, Ann. Inst. Fourier (Grenoble) 57 (2007), no. 2, 603–628. 10.5802/aif.2269Search in Google Scholar

[3] O. Costin and S. Tanveer, Short time existence and Borel summability in the Navier–Stokes equation in 3 , Comm. Partial Differential Equations 34 (2009), no. 7–9, 785–817. 10.1080/03605300902892469Search in Google Scholar

[4] P.-F. Hsieh and Y. Sibuya, Basic Theory of Ordinary Differential Equations, Universitext, Springer, New York, 1999. 10.1007/978-1-4612-1506-6Search in Google Scholar

[5] A. Lastra and S. Malek, On parametric Gevrey asymptotics for singularly perturbed partial differential equations with delays, Abstr. Appl. Anal. 2013 (2013), Article ID 723040. 10.1155/2013/723040Search in Google Scholar

[6] A. Lastra and S. Malek, On parametric Gevrey asymptotics for some Cauchy problems in quasiperiodic function spaces, Abstr. Appl. Anal. 2014 (2014), Article ID 153169. 10.1155/2014/153169Search in Google Scholar

[7] A. Lastra and S. Malek, On parametric Gevrey asymptotics for some nonlinear initial value Cauchy problems, J. Differential Equations 259 (2015), no. 10, 5220–5270. 10.1016/j.jde.2015.06.020Search in Google Scholar

[8] A. Lastra and S. Malek, On multiscale Gevrey and q-Gevrey asymptotics for some linear q-difference differential initial value Cauchy problems, J. Difference Equ. Appl. 23 (2017), no. 8, 1397–1457. 10.1080/10236198.2017.1337104Search in Google Scholar

[9] A. Lastra and S. Malek, On parametric Gevrey asymptotics for initial value problems with infinite order irregular singularity and linear fractional transforms, Adv. Difference Equ. 2018 (2018), Paper No. 386. 10.1186/s13662-018-1847-9Search in Google Scholar

[10] A. Lastra, S. Malek and J. Sanz, On q-asymptotics for linear q-difference-differential equations with Fuchsian and irregular singularities, J. Differential Equations 252 (2012), no. 10, 5185–5216. 10.1016/j.jde.2012.01.038Search in Google Scholar

[11] A. Lastra, S. Malek and J. Sanz, On Gevrey solutions of threefold singular nonlinear partial differential equations, J. Differential Equations 255 (2013), no. 10, 3205–3232. 10.1016/j.jde.2013.07.031Search in Google Scholar

[12] S. Malek, On Gevrey functional solutions of partial differential equations with Fuchsian and irregular singularities, J. Dyn. Control Syst. 15 (2009), no. 2, 277–305. 10.1007/s10883-009-9061-4Search in Google Scholar

[13] S. Malek, On Gevrey asymptotics for some nonlinear integro-differential equations, J. Dyn. Control Syst. 16 (2010), no. 3, 377–406. 10.1007/s10883-010-9098-4Search in Google Scholar

[14] S. Malek, Asymptotics and confluence for some linear q-difference-differential Cauchy problem, J. Geom. Anal. 32 (2022), no. 3, Paper No. 93. 10.1007/s12220-021-00820-zSearch in Google Scholar

[15] H. Tahara and H. Yamazawa, Multisummability of formal solutions to the Cauchy problem for some linear partial differential equations, J. Differential Equations 255 (2013), no. 10, 3592–3637. 10.1016/j.jde.2013.07.061Search in Google Scholar

Received: 2022-06-14
Revised: 2022-09-02
Accepted: 2022-09-13
Published Online: 2022-11-24
Published in Print: 2023-08-01

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Downloaded on 25.9.2025 from https://www.degruyterbrill.com/document/doi/10.1515/anly-2022-1077/html
Scroll to top button