Аннотация:
This article is a review of our paper [18] which, for a wide class of ODEs, provides sufficient conditions of existence and uniqueness of a fundamental system of solutions, with specified asymptotic behaviour, in wide sectors centered at an isolated singularity of the coefficients. These singularity can be general, not just of pole type.
Ключевые слова:
linear differential systems, non-meromorphic coefficients, uniqueness
of asymptotic expansions, generalized Stokes sectors.
D. Guzzetti is member of the COST Action CA21109 CaLISTA, is member of the European Union's H2020 research and innovation programme under the Marie Skłodowska-Curie grant No. 778010 IPaDEGAN. He is a member of INdAM/GNFM, and of the Project “Mathematical Methods in Non Linear Physics” (MMNLP), Commissione Scientifica Nazionale 4 – Fisica Teorica (CNS4) of the Istituto Nazionale di Fisica Nucleare (INFN). He is also member of the PRIN 2022 (2022TEB52W) – PE1 – “The charm of integrability: from nonlinear waves to random matrices”, and of the EU project Caligola HORIZON-MSCA-2021-SE-01, Project ID: 101086123.
Поступило в редакцию: 14.01.2025 Исправленный вариант: 26.01.2025
Образец цитирования:
D. Guzzetti, “Uniqueness of asymptotic solutions for linear systems of ODEs with isolated singularities of general type”, Изв. РАН. Сер. матем., 90:1 (2026), 90–111; Izv. Math., 90:1 (2026), 87–108