具有多時(shí)滯的二階泛函微分方程的周期解.pdf

1、華僑大學(xué)碩士學(xué)位論文具有多時(shí)滯的二階泛函微分方程的周期解姓名：曹君艷申請學(xué)位級別：碩士專業(yè)：基礎(chǔ)數(shù)學(xué)指導(dǎo)教師：王全義20090501具有多時(shí)滯的二階泛函微分方程的周期解IIAbstractInthispaperbyusingthecontinuationtheemofcoincidencedegreetheysomeanalysistechniqueswestudytheexistenceofperiodicsolutionsfakin

2、doftwosecondderfunctionaldifferentialequationswithdeviatingarguments.InChapter2weintroducethecoincidencedegreetheystudytheexistenceofperiodicsolutionsfthegeneralizedLinardequation0)))((())()))(((()())(()(2121=?′?′′′ttxtg

3、txttxftxtxftxττ.(1)WeestablishsomesufficientconditionwhichguaranteetheexistenceofperiodicsolutionsofEq.(1)ourresultsgeneralizeimprovetheonesinpaper[11].InChapter3whentheresistancecoefficientfunctionofEq.(1)containsavaria

4、nttadeviatingargumentwestudytheproblemontheexistenceofperiodicsolutionsfthegeneralizedLinardequation0)))((())()))(((()()))((()(22211=?′?′?′′ttxtgtxttxftxttxtftxτττ(2)obtainsomenewresultswhichguaranteetheexistenceofperiod