數學系學術講座（五、六）

 題目一：Estimates for the number of limit cycles of (generalized) Abel equation via some geometric criteria on curves内容簡介：In this work we study the equation x'=s(t,x)=/sum_0^m a_i(t)x^i. We give some criteria to estimate the number of limit cycles of the equation. Different from the fixed sign hypothesis for some coefficients a_i(t) in the classical results, our criteria are on...

2018-01-03

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