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EXISTENCE OF POSITIVE ALMOST PERIODIC OR ERGODIC SOLUTIONS FOR SOME NEUTRAL NONLINEAR INTEGRAL EQUATIONS

机译:一些中性非线性积分方程的正概周期解或代数解的存在性

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摘要

We state sufficient conditions for the existence of the positive, almost periodic or ergodic solutions of the following neutral integral equation:x(t) =γx (t-σ) (1-γ)∫_(t-σ)~t/f(s,x(s))ds, where 0 < γ < 1 and f : R x R~→R~+ is a continuous map. We also treat the asymptotically, weakly and pseudo almost periodic solutions. Our results do not need the monotonicity of f (t, .).
机译:我们为以下中性积分方程的正解,几乎周期解或遍历解的存在给出充分条件:x(t)=γx(t-σ)(1-γ)∫_(t-σ)〜t / f (s,x(s))ds,其中0 <γ<1且f:R x R〜→R〜+是连续映射。我们还处理渐近,弱和伪几乎周期的解。我们的结果不需要f(t,。)的单调性。

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