【摘要】 利用重合度理论中的延拓定理讨论了一类具连续分布型微分方程 x· (t) =grad G(x(t) ) +f (t,∫0-rH (s) x(t+s) ds)的周期解的存在性 ,建立了周期解存在的充分条件更多还原

【Abstract】 Making use of the continuation theorem in coincidence degree theory,the existence o f periodic solutions of a class of integral differential equations x·(t)=gradG(x(t))+f(t,∫ 0 -r H(s)x(t+s)ds) was discussed,we established the sufficient conditions of the existence of periodic solution.更多还原