集美大学学报:自然科学版
集美大學學報:自然科學版
집미대학학보:자연과학판
Journal of Jimei University(Natural Science)
2012年
2期
142-146
,共5页
三阶泛函微分方程%周期解%重合度
三階汎函微分方程%週期解%重閤度
삼계범함미분방정%주기해%중합도
third order functional differential solution%periodic solution%coincidence degree
利用重合度理论,研究一类三阶时滞Duffing泛函微分方程x(t)+∑2i=1[aix(i)(t)+bix(i)(t-τi)]+cx(t)+g1(t,x(t))+g2(t,x(t-τ(t)))=e(t)的T-周期解问题,获得了该方程T-周期解存在性和唯一性的若干新结果.
利用重閤度理論,研究一類三階時滯Duffing汎函微分方程x(t)+∑2i=1[aix(i)(t)+bix(i)(t-τi)]+cx(t)+g1(t,x(t))+g2(t,x(t-τ(t)))=e(t)的T-週期解問題,穫得瞭該方程T-週期解存在性和唯一性的若榦新結果.
이용중합도이론,연구일류삼계시체Duffing범함미분방정x(t)+∑2i=1[aix(i)(t)+bix(i)(t-τi)]+cx(t)+g1(t,x(t))+g2(t,x(t-τ(t)))=e(t)적T-주기해문제,획득료해방정T-주기해존재성화유일성적약간신결과.
By means of the theory of coincidence degree,a type of third order functional differential equation with delays x'''(t)+∑2 i=1[aix(i)(t)+bix(i)(t-τi)]+cx(t)+g1(t,x(t))+g2(t,x(t-τ(t)))=e(t) was considered.The sufficient condition for the existence of unique T-periodic solution was obtained.