Consider the RDDE’s initial value problemwhere a, b and τ are arbitrary real constants, and τ＞ 0, φ(θ) is a given initial function.In this paper, we find series expansions of the accurate solution of the initial valueproblem (EI).
研究具有连续分布时滞的非线性中立型双曲微分方程/t[p(t)/t〔u(x,t)+∑from i=1 to l (λi(t)u(x,t-τi)〕]=a(t)Δu(x,t)+∑ from k=1 to s ak(t)Δu(x,t-ρk(t))-∫ abq(x,t,ξ)f[u(x,g(t,ξ))]dσ(ξ),(x,t)∈Ω×[0,+∞≡G的振动性问题,利用Riccati变换和Philos的积分平均方法,获得该方程边值问题一切解在G内振动的几个充分条件,推广并改进了文[1]和[6]中相应的结果.
