| 吕启龙.关于Dulac函数的结构问题[J].数学研究及应用,1985,5(2):145~150 |
| 关于Dulac函数的结构问题 |
| On the Problem of Structure of Dulac' s Function |
| 投稿时间：1981-11-09 |
| DOI：10.3770/j.issn:1000-341X.1985.02.037 |
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| 英文摘要: |
| This paper deals with the problem of structure of Dulac's function B(x,y) in the theory of limit cycles. We give the useful structural expression and illustrate it by some examples. This expression is as follows. |
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