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2001•Journal of Tianjin Normal UniversityRequires access

Study on Distribution of Limit Cycles of Cubic Systems

Ying Yi

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Abstract

Start with the general theory and then specialized to the particular case of cubic polynomial systems for which the simultaneous bifurcation of limit cycles from the origin and the equator is studied. By means of method of changing the stability of singular at the origin, combining with the method of researching the bifurcation at infinity in vector fields of cubic system, the sufficient conditions for the existence of several limit cycles around the origin or near the equator respectively to a class of cubic system which has exactly an unique singular point at infinity are obtained.

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What this paper is about

Start with the general theory and then specialized to the particular case of cubic polynomial systems for which the simultaneous bifurcation of limit cycles from the origin and the equator is studied. By means of method of changing the stability of singular at the origin, combining with the method of researching the bifurcation at infinity in vector fields of cubic system, the sufficient conditions for the existence of several limit cycles around the origin or near the equator respectively to a class of cubic system which has exactly an unique singular point at infinity are obtained.

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Available abstract

Start with the general theory and then specialized to the particular case of cubic polynomial systems for which the simultaneous bifurcation of limit cycles from the origin and the equator is studied. By means of method of changing the stability of singular at the origin, combining with the method of researching the bifurcation at infinity in vector fields of cubic system, the sufficient conditions for the existence of several limit cycles around the origin or near the equator respectively to a class of cubic system which has exactly an unique singular point at infinity are obtained.

Key concepts: Limit (mathematics), Infinity, Mathematics, Singular point of a curve, Bifurcation, Bifurcation theory, Equator, Infinite-period bifurcation

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