共查询到20条相似文献,搜索用时 15 毫秒
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李常品 《应用数学学报(英文版)》2001,(2)
1. IntroductionOne class of reaction-diffusion equations in one-spatial dimension reads as [1,2],where p is a parameter, 1 < k E Z .Li has ever considered the static (or steady-stste) bifurcations of (4) for the simplercases with k = 2, 3 in [3]. In this paper, we focus on studying the static bifurcations of (4)for the complicated cases with 4 5 k E Z . That is, we consider the bifurcations of thefollowing equationwhere p is a parameter and 4 5 k E Z .Let X = {u E C'[0,7] I u(0) ~ u(x) = … 相似文献
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讨论了一类反应扩散方程 u″ μ(u -uk) =0 ,u(0 ) =u(π) =0 (4≤k∈Z ,μ为参数 )的分叉现象· 运用所谓基于李雅普诺夫_施密特约化的奇异理论方法 ,得到满意的结果 相似文献
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Laurent Véron 《Mathematische Zeitschrift》2013,273(1-2):1-17
If Ω is a bounded domain in ${\mathbb{R}^N}$ , we study conditions on a Radon measure μ on ?Ω for solving the equation ?Δu + e u ? 1 = 0 in Ω with u = μ on ?Ω. The conditions are expressed in terms of Orlicz capacities. 相似文献
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The dual approach to the problem –u=u+u|u|2*–2, uþe
0
1
(gW), permits a simple proof of a recent existence result [5] and allows extensions of this result to similar problems also with asymmetric mnonlinearities.Supported by min P.I., Gruppo Naz. (40%) Calcolo delle Variazioni... 相似文献
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讨论了一类反应扩散方程u+μ(u-u^k)=0,u(0)=u(π)=0的分叉现象,运用所谓基于李雅普诺夫-施密特约化的奇异理论方法,得到满意的结果。 相似文献
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导出边值问题Δ2u-sΔu+k2u=o;x∈Ω∪Ω'(R2;u|г=uo;аu/аn|г=go的定解问题,MRM边界变分方程,全平面解的表达式.从中可以看出,MRM边界变分方程中只包含弱奇异积分核,并且自动消除了原第一、二MRM边界积分方程中出现的强奇异积分核.问题解的表达式后并不加任何多项式,因而也不需要引入Lagrange乘子求解该项,这给边界元数值求解过程带来极大的方便.数值分析结果表明该方法具有明显优势. 相似文献
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We present some comments on the behavior of solutions of the difference equation
where p
i 0, i = 1,..., k, k N, and x
–k
,..., x
–1 R. 相似文献
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Zhiguo Chen 《Southeast Asian Bulletin of Mathematics》2001,25(1):31-45
This paper is a continuation work of the authors on (z)-homeomorphisms. We establish similar relationships between quasisymmetric function and dilatation function as in quasiconformal mappings under (z)-homeomorphisms. Furthermore, a weighted quasiisometric inequality is presented.AMS Subject Classification (1991) 30C62 30C65 相似文献
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The behavior of bounded solutions to the equation Δu−c(x)u=0 on riemannian manifolds of special type
A. G. Losev 《Mathematical Notes》1999,65(2):175-180
In the paper we consider solutions of the equation Δu−c(x)u=0,c(x)≥0, on complete Riemannian manifolds constituted as follows: the exterior of some compact set is isometric to the direct product
of the semiaxis by some compact manifold with the metricds
2=h
2(r)dr
2+g
2(r)dθ2. Necessary and sufficient conditions under which bounded solutions of the equation have a limit independent of θ asr→∞ are obtained and also conditions under which the two-sided Liouville theorem is valid.
Translated fromMatematicheskie Zametki, Vol. 65, No. 2, pp. 215–221, February, 1999. 相似文献
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Stevo Stević 《Journal of Difference Equations and Applications》2013,19(7):641-647
In this note we improve Theorem 2 in Ref. [3] , about the difference equation x n +1 = ~ i =0 k f i x n m i p i , n =0,1,2,..., where k is a positive integer, f i , p i ] (0, X ) for i =0,..., k , and the initial conditions x m k , x m k +1 ,..., x 0 are arbitrary positive numbers. 相似文献
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当n≥7时,已经证明对任意的λ∈(0,λ_1)以及任意整数k≥0,R~n中的单位球B(0,1)上的方程⊿u+|u|~(p-1)u+λu=0在H_0~1(B(0,1))中必有一个径向解具k个结点。本文证明当3≤n≤6时这一结果不再成立。还讨论了上述方程径向正解的唯一性。 相似文献
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V. A. Ilyin 《Journal of Mathematical Sciences》2003,114(4):1461-1472
This article concerns the boundary control on the side x = 0 when the other side x = l is fixed. The corresponding process of oscillations is studied for the time interval T > 0 and is described by the generalized solution of the equation
This solution belongs to the class that admits the existence of finite energy for any time moment t. 相似文献