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摘要
In 1977 Lins Neto et al. (1977) conjectured that the classical Lienard system @@@ (x) over bar = y - F(x), (y) over bar = -x, @@@ with F (x) a real polynomial of degree n, has at most [(n - 1)/2] limit cycles, where [.] denotes the integer part function. In this paper we summarize what is known and what is still open on this conjecture. For the known results on this conjecture we present a complete proof.
- 出版日期2017
- 单位上海交通大学
