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A CONCRETE EXAMPLE OF THE EXISTENCE OF FOUR LIMIT CYCLES FOR PLANE QUADRATIC SYSTEMS
被引：11
作者：
史松龄
机构：
[1] Graduate School, China University of Science and Technology
[2] Bureau of Applied Mathematics, Academia Sinica
关键词：
占一;
A CONCRETE EXAMPLE OF THE EXISTENCE OF FOUR LIMIT CYCLES FOR PLANE QUADRATIC SYSTEMS;
D O I：
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学科分类号：
摘要：
This paper gives a positive answer to an unknown problem as to whether a plane vector field,given by two polynomials of 2nd degree, can have more than 3 limit cycles. This problem wasput forward at the symposium on the mathematical consequences of the Hilbert problems, sponsoredby the American Mahematical Society in May, 1974.
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页码：153 / 158
页数：6
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