共查询到20条相似文献,搜索用时 0 毫秒
1.
This paper deals with the existence of three positive solutions for a class of nonlinear singular three-point boundary value problem with p-Laplacian. By means of a fixed point theorem duo to Leggett and Williams, sufficient condition for the existence of at least three positive solutions to the nonlinear singular three-point boundary value problem is established 相似文献
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张亚静 《数学的实践与认识》2004,34(3):159-164
研究了二阶常微分方程三点边值问题 ,通过使用不动点指数这一工具 ,在适当的条件下 ,建立了这类边值问题多正解存在的充分条件 . 相似文献
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在与线性问题第一特征值相关的条件下,通过应用不动点指数理论讨论了三点边值问题u″ 9(t)f(u)=0,t∈(0,1),u′(0)=0,u(1)=αu(η)正解的存在性,这里η∈(0,1),α∈R且0<α<1.本文结果推广和改进了文献[1]的主要结论. 相似文献
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In this paper, we consider the existence of positive solutions for the singular fourthorder four point boundary value problem with p-Laplacian operator. By using the fixed point theorem of cone expansion and compression, the existence of multiple positive solutions is obtained. 相似文献
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Symmetric Positive Solutions for a Singular Second-Order Three-Point Boundary Value Problem 总被引:4,自引:0,他引:4
Yong-ping Sun 《应用数学学报(英文版)》2006,22(1):65-74
In this paper, we consider the following second order three-point boundary value problem u″(t)+a(t)f(u(t))=0,0〈t〈1,u(0)-u(1)=0,u'(0)-u'(1)=u(1/2),where a : (0, 1) → [0, ∞) is symmetric on (0, 1) and may be singular at t = 0 and t = 1, f : [0, ∞) → [O, ∞) is continuous. By using Krasnoselskii's fixed point theorem ia a cone, we get some existence results of positive solutions for the problem. The associated Green's function for the three-point boundary value problem is also given. 相似文献
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研究一类半无穷区间上二阶微分方程三点边值问题其中ρ∈C[0,+∞)∩C~1(0,+∞),ρ(t)>0,t∈I,dt<∞,α≥0,β≥0,0<ξ<+∞f:I×I×R→I.利用Leggett-williams不动点定理,我们获得了该边值问题至少存在三个正解的充分条件. 相似文献
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具p-Laplace算子的四阶三点边值问题的两个正解 总被引:1,自引:0,他引:1
研究下列具有p-Laplace算子的四阶三点边值问题(p(u″(t)))″+a(t)f(u(t))=0,t∈(0,1),u(0)=ξu(1),u′(1)=ηu′(0),(p(u″(0))′=α1(p(u″(δ))′,p(u″(1))=β1(p(u″(δ)),通过利用Avery-Henderson不动点定理,给出了边值问题存在至少两个正解的充分条件. 相似文献
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研究的是二阶非线性微分方程组的边值问题,在适合的条件下,应用抽象不动点理论以及线性算子的第一特征值的条件,得出了方程组的多个正解的存在性. 相似文献
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利用锥上的不动点定理,给出了非线性二阶三点边值问题解和多解的存在性定理.其中允许非线性项有一个负的下界. 相似文献
11.
Xiaoming HeWeigao Ge 《Journal of Mathematical Analysis and Applications》2002,268(1):256-265
We establish the existence of at least three positive solutions to the second-order three-point boundary value problem, u″ + f(t, u) = 0, u(0) = 0, αu(η) = u(1), where η: 0 lt; η < 1, 0 < α < 1/η, and f: [0, 1] × [0, ∞) → [0, ∞) is continuous. We accomplish this by making growth assumptions on f which can apply to many more cases than the sublinear and superlinear ones discussed in recent works. 相似文献
12.
谢胜利 《数学物理学报(A辑)》2010,30(1):258-266
该文使用不动点指数理论,研究二阶奇异非线性微分方程组多点边值问题的正解和多个正解的存在性.给出某些保证解的存在性的极限条件,这些条件适用于较一般的函数. 相似文献
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综合利用锥上的不动点指数理论和上下解方法,讨论了一类含两个参数的p- Laplacian算子系统奇异边值问题正解的存在性、非存在性和多解性,得到了一条由参数决定的连续曲线,它决定了解的分布情况,从而获得了新的结论. 相似文献
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一类二阶三点非线性边值问题的正解存在性与多解性 总被引:47,自引:1,他引:47
利用Krasnosel’skii锥拉伸与锥压缩型不动点定理考察了一类二阶三点非线性边值问颗的正解存在性、 非存性与多解性。 相似文献
15.
Zhan Bing BAI Wei Gao GE 《数学学报(英文版)》2006,22(6):1825-1830
In this paper, we generalize the fixed point theorem of cone expansion and compression of norm type to the theorem of functional type. As an application, the existence of positive solutions for some fourth-order beam equation boundary value problems is obtained. The emphasis is put on that the nonlinear term is dependent on all lower order derivatives. 相似文献
16.
研究了含有一阶导数的四阶边值问题,利用度理论构造出的一个新的不动点定理,由Green函数的性质,给出了一类含有导数的四阶边值问题正解存在的充分条件,得到了边值问题正解存在的一些新结果. 相似文献
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利用混合单调算子的不动点定理讨论了一类二阶奇异脉冲微分方程三点边值问题,得到了正解存在的一个充分条件. 相似文献
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In this paper,we study the multiple positive solutions of integral boundary value problems for a class of p-Laplacian differential equations involving the Caputo fractional derivative.Using a fixed point theorem due to Avery and Peterson,we obtain the existence of at least three positive decreasing solutions of the nonlocal boundary value problems. We give an example to illustrate our results. 相似文献
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利用锥映射的不动点指数定理,建立了一类奇异三点边值问题多个正解的存在性定理.改进和推广了相关结果. 相似文献