The uniqueness of limit cycles for classical Liénard equations of degree four under singular perturbations

DOI10.1360/N012016-00106zbMath1499.34219MaRDI QIDQ5063742

Chengzhi Li, Weigu Li

Publication date: 21 March 2022

Published in: SCIENTIA SINICA Mathematica (Search for Journal in Brave)

zbMATH Keywords

singular perturbationslow divergence integralLins-de Melo-Pugh conjecture

Mathematics Subject Classification ID

Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05) Theory of limit cycles of polynomial and analytic vector fields (existence, uniqueness, bounds, Hilbert's 16th problem and ramifications) for ordinary differential equations (34C07) Singular perturbations for ordinary differential equations (34E15)

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