Ngày tải lên :
21/06/2014, 05:20
... Marcel Dekker, New York, NY, USA, 2nd edition, 2000 A N Sharkovsky, Y L Ma˘strenko, and E Y Romanenko, Difference Equations and Their Applications, ı vol 250 of Mathematics and Its Applications, Kluwer ... For t ≤ −ρ, take k k > k 3.41 < k 3.42 − V ∞ /2, then V t V ∞ k < t Hence, if we take min{ , }, then for t ≥ ρ, we have V t > k t > λ1 t, and for t ≤ −ρ, we have V t > k t So, if we ... with k ∈ 2, T − , and < V t ≤ γ < k , then 1.1 has at least five solutions Moreover, one of the following cases occurs: i k is even and 1.1 has two sign-changing solutions, ii k is even and 1.1...