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 f...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展开更多
文摘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