Positive periodic solutions of nonlinear functional differential equations
Positive periodic solutions of nonlinear functional differential equations
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非线性函数微分方程的正周期解
DOI:
10.1016/j.amc.2003.07.013
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发表时间:
2004-09
期刊:
影响因子:
--
通讯作者:
朱立斐
中科院分区:
文献类型:
--
作者:
李永昆;朱立斐
We apply the generalized form of Leggett–Williams fixed point theorem to prove that the following nonlinear functional differential equation [Formula: see text] has at least two positive T-periodic solutions, where a(t) is a T-periodic function satisfying exp (∫0Ta(u) d u)>1 , f(t,xt) is a nonnegative function defined on R×BC, where BC denotes the Banach space of bounded continuous functions.
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DOI:
--
发表时间:
2001-09
期刊:
--
影响因子:
--
作者:
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通讯作者:
S. Cheng;Guang Zhang
DOI:
10.2307/2316070
发表时间:
1964
期刊:
--
影响因子:
--
作者:
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通讯作者:
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影响因子:
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作者:
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R. Avery;C. Chyan;J. Henderson
DOI:
10.1142/s0218202505000467
发表时间:
2005-04
影响因子:
3.5
作者:
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通讯作者:
D. Jiang;D. O’Regan;R. Agarwal;Xiaojie Xu