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IntroductionNormalformtheoryisaverypowerfultoolfortheanalysisofnonlineardynamicalsystems.Usingthistheory ,onecanobtainthesimplestpossibleformsofasetofgoverningdifferentialequationsbysequentiallycompletingcertaincoordinatetransformations[1- 3].Asimplifiedf… 相似文献
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