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1.
Hammerstein型非线性积分方程正解的个数 总被引:4,自引:6,他引:4
<正> 本文是作者工作[8]、[9]的继续.在[9]中作者利用Leray-Schauder拓扑度理论研究了多项式型Hammerstein非线性积分方程的固有值,即设 相似文献
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In this paper, we use cone theory and a new method of computation of fixed point index to study a system of nonlinear Hammerstein type integral equations, and the existence of multiple positive solutions to the system is discussed. 相似文献
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Banach空间非线性混合单调Hammerstein型积分方程的迭代解 总被引:6,自引:0,他引:6
在Banach空间中,建立了“非线性混合单调型算子”不动点和最大最小耦合不动点的存在与迭代逼近定理,并应用到序Banach空间非线性混合单调Hammerstein型积分方程. 相似文献
4.
Jiabu Dishen 《Annals of Differential Equations》2013,(2):127-131
The existence of periodic solution to nonlinear integral equations with infinite delay is studied in this paper. We prove that the g- uniform bounded and g- uniform ultimate bounded solutions implies the existence of periodic solutions using Schauder-Tychonov’s fixed point theorem in the phase space (Cg,|·|g). 相似文献
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Banach空间中Volterra非线性积分方程的Carathéodory解 总被引:1,自引:0,他引:1
本文在相当弱的条件下研究Banach空间中Volterra非线性积分方程的Caratheodory解的存在性,证明方法简洁且与现有文献不同. 相似文献
6.
Guo Dajun 《数学年刊B辑(英文版)》1989,10(4):513-519
In this paper, the author uses the topological degree theory to investigate the multiple solutions of nonlinear Fredholm integral equations in Banach spaces. Two new theorems
are obtained and two examples are given. 相似文献
7.
ON THE EXISTENCE THEOREMS OF NONTRIVIAL PERIODIC SOLUTIONS TOA CLASS OF NONLINEAR NON-AUTONOMOUS SYS
ONTHEEXISTENCETHEOREMSOFNONTRIVIALPERIODICSOLUTIONSTOACLASSOFNONLINEARNON-AUTONOMOUSSYSTEMS¥GaoZhanhai(高占海);ZhangDi(张棣)(North... 相似文献
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51.IntroductionDtherelltial-iterativeequationisakindofspecialfunctionaldmerelitialequationswhichwerediscussedrecently[1--6].Mostoftheresearche.[1--3]nowavailablefocusedontheeln-tenceofautonomousdifferential-iterativeequationintheformofwherex(2)=x(x(t))andx(k)=x(x(*--')(t)),k=3,4,'In,andsomeintheml4--5]dealtwiththeequatiollx'(t)~(a'--xZ(t))f(x(")(t)).Weproposedatransformationtheoremin[6]andusedittodiscusstheetistenceandbehaviorofsolutionstotheequationx'(t)'=.ax(t)--b-c(x(t)),where0相似文献
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1.IntroductionInthispaperwewillconsiderthenumericalsolutionsofthenon--linearintegralequationsofHammersteintype:wheref,kandgaregivenfunctionandyistheunknown.TherehasbeenmuchinterestinthisproblemsinceHammersteinintegralequations,whichcamefromtheelectromagneticfluiddynamics,yieldsstrongphysicalbackground.Moreover,theFredholmintegralequationsofsecondkindarethespecialcaseoftheHammersteinintegralequations.In[6,p.700]thestandardcollocationmethodisappliedtoobtaintheapproximationsolutionofEq.(1).Int… 相似文献
11.
高阶拟线性椭圆型方程的非平凡解 总被引:1,自引:0,他引:1
二阶拟线性椭圆型方程的非平凡解的存在性在文献[1—3]中讨论过。本文目的是要讨论高阶情况。本文的椭圆型条件(F_3)要比[3]的弱,且关于(PS)条件的证明也简化了。然后,我们建立了 Pohozaev 型恒等式,用来说明本文关于 F_u 的增长性的限制(见下面的(F_2))在一般情况下是必要的。设(?)是 R~n 中有光滑边界(?)的有界区域,E 表示 Sobolev 空间 W_0~(m,p)(?),我们考虑齐次 Dirichlet 问题 相似文献
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The purpose of this paper is to investigate the stability and asymptotic behav-ior of the time-dependent solutions to a linear parabolic equation with nonlinear boundarycondition in relation to their corresponding steady state solutions. Then, the above resultsare extended to a semilinear parabolic equation with nonlinear boundary condition by an-alyzing the corresponding eigenvalue problem and using the method of upper and lowersolutions. 相似文献
14.
非线性Kawahara方程解的存在唯一性 总被引:1,自引:0,他引:1
非线性Kawahara方程是描述不同介质中存在单色非线性扰动时长波的传播问题的一类重要物理模型.本文通过对相应线性问题基本解的估计,导出了一类一般的Strichartz-型光滑时空混合范数估计,进而得到了非线性Kawahara方程解的存在唯一性结果. 相似文献
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非线性Kawahara方程解的存在唯一性 总被引:3,自引:0,他引:3
非线性Kawahara方程是描述不同介质中存在单色非线性扰动时长波的传播问题的一类重要物理模型.本文通过对相应线性问题基本解的估计,导出了一类一般的Strichartz-型光滑时空混合范数估计,进而得到了非线性Kawahara方程解的存在唯一性结果. 相似文献
16.
This work describes an accurate and effective method for numerically solving a class of nonlinear fractional differential equations.To start the method,we equivalently convert these types of differential equations to nonlinear fractional Volterra integral equations of the second kind by integrating from both sides of them.Afterward,the solution of the mentioned Volterra integral equations can be estimated using the collocation method based on locally supported Gaussian functions.The local Gaussian-collocation scheme estimates the unknown function utilizing a small set of data instead of all points in the solution domain,so the proposed method uses much less computer memory and volume computing in comparison with global cases.We apply the composite non-uniform Gauss-Legendre quadrature formula to estimate singular-fractional integrals in the method.Because of the fact that the proposed scheme requires no cell structures on the domain,it is a meshless method.Furthermore,we obtain the error analysis of the proposed method and demon-strate that the convergence rate of the approach is arbitrarily high.Illustrative examples clearly show the reliability and efficiency of the new technique and confirm the theoretical error estimates. 相似文献
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The singular boundary value problems for fourth-order differential equations are considered under some conditions concerning the first eigenvalues of the relevant linear operators. Sufficient conditions which guarantee the existence of nontrivial solutions are obtained. We use the topological degree to prove our main results. 相似文献
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Banach空间非线性脉冲Fredholm型积分方程的耦合拟解及解 总被引:1,自引:0,他引:1
本文利用不等式迭代技术和Monch不动点定理,研究了Banach空间非线性脉冲 Fredholm型积分方程耦合拟解及解的存在性,其方法和结果改进并发展了有关文献. 相似文献