Representation theorem for the solutions of equations with the turning point of infinite order

DOI10.1007/BF01783460zbMath0941.34055OpenAlexW2055466777MaRDI QIDQ1817938

Karen Yagdjian

Publication date: 4 January 2000

Published in: Annali di Matematica Pura ed Applicata. Serie Quarta (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01783460

zbMATH Keywords

phase functionslinear ordinary differential equationamplitude functionssingle turning point

Mathematics Subject Classification ID

Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05) Singular perturbations, turning point theory, WKB methods for ordinary differential equations (34E20) Asymptotic expansions of solutions to ordinary differential equations (34E05)

Cites Work

• Parametrices for a class of differential operators with multiple characteristics
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