一類具有脈沖的積分微分方程系統(tǒng)的正周期解.pdf

1、東北師范大學(xué)碩士學(xué)位論文一類具有脈沖的積分微分方程系統(tǒng)的正周期解姓名：張偉鵬申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：應(yīng)用數(shù)學(xué)指導(dǎo)教師：范猛20040501AbstractTileprincipleaimofthispaperistoexploretheexistenceofpositiveperiodicsolutionsofageneralizedecologicalcompetitionsystemsgovernedbyimpulsiveinter

2、gro—differentialequationwithinfinitedelaysInn犰(t)=仉(t)I—q(t)一∑alj(t)yj“’(t)一∑6lJ(t)諺”@一，oo))Lj=lJ=1n尸n]～∑卜，(t，札)矽’(t—u)du一∑dj(t)yt(t)yj(t一白(t))1j=l6j=llt≠tk，Av(t)=Ydt)一璣0～)=(b讓^讓)璣(t一)，t=t七Easilyverifiablesufficientcrite

3、riaareestablishedThemainresultswhichimproveandgeneralizesomeknownresultsintheliteratureThetreeofthispaperisthefollowingChapteronefocusesonthebackgroundoftheproblembeinginvestigatedChaptertwoestablisheseasilyverifiablesuf

4、ficientcriteriafortheexistenceofpositiveperiodicsolutionsofthegeneralizedecologicalcompetitionsystemwithimpulseandinfinitedelayInthischapter，applicationstosomefamouscompetitionmodelsarealsopresentedTheinvestigationshowst