摘要
Consider the RFDE where F, Gi∈C（R,R）, 0≤τi（t）≤γ（i=1, 2,…,n）, r>0. F（u） is not increasing for u∈R, and there is a Ti>t0 for ?to∈R and each i such that t-τi（t）≤t0 holds for r∈(t0, Ti)We have following results. Theorem 1. Suppose that, there exist a and b（-∞<a≤b<+∞） for F, Gi （i=1, 2,…,n） such
