Toward uniform existence and convergence theorems for three-scale systems of hyperbolic PDEs with general initial data

Steve Schochet, Xin Xu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Uniform existence of solutions to initial-value problems and convergence of appropriately filtered solutions are proven for a special class of three-scale singular limit equations, without any restriction on the initial data. The uniform existence is proven using a novel system of energy estimates. The convergence result is based on a detailed analysis of the fastest-scale oscillations, which unlike in two-scale systems have no explicit solution formula.

Original languageEnglish
Pages (from-to)2401-2443
Number of pages43
JournalCommunications in Partial Differential Equations
Volume47
Issue number12
DOIs
StatePublished - 2022

Funding

FundersFunder number
ISF-NSFC2519/17
Tel Aviv University
Pusat Pengajian Sains Matematik, Universiti Sains Malaysia

    Keywords

    • Limit profile
    • singular limit
    • three time scales
    • uniform existence

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