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41.
In this paper we prove the existence of an open interval (λ' ,λ") for each λ in the interval a class of Neumann boundary value equations involving the (p_1,..., p_n)- Laplacian and depending on λ admits at least three solutions. Our main tool is a recent three critical points theorem of Averna and Bonanno [Topol. Methods Nonlinear Anal. [1] (2003) 93-103]. 相似文献
42.
The purpose of this note is to prove the existence of three solutions for a two-point boundary value double eigenvalue problem.
The approach is fully based on a recent three critical points theorem of B. Ricceri [A three critical points theorem revisited,
Nonlinear Anal., 70/9 (2009) 3084–3089]. 相似文献
43.
We investigate the existence of principal eigenvalues (i.e., eigenvalues corresponding to positive eigenfunctions) for the boundary value problem on ; on , where is a bounded region in , is an indefinite weight function and may be positive, negative or zero.
44.
Perturbation methods depend on a small parameter which is difficult to be found for real-life nonlinear problems. To overcome this shortcoming, two new but powerful analytical methods are introduced to solve nonlinear heat transfer problems in this Letter; one is He's variational iteration method (VIM) and the other is the homotopy–perturbation method (HPM). Nonlinear convective–radiative cooling equations are used as examples to illustrate the simple solution procedures. These methods are useful and practical for solving the nonlinear heat diffusion equation, which is associated with variable thermal conductivity condition. Comparison of the results obtained by both methods with exact solutions reveals that both methods are tremendously effective. 相似文献
45.
电感耦合等离子体原子发射光谱法测定马奶酒中的多种元素 总被引:2,自引:0,他引:2
电感耦合等离子体原子发射光谱法测定马奶酒中的多种元素嘎日迪,乌地(内蒙古师范大学化学系,配位化学研究所,呼和浩特,010022)关键词电感耦合等离子体原子发射光谱,马奶酒,微量金属元素蒙古民族喜爱的传统饮料──马奶酒(蒙语“策格”)是用鲜马奶为原料发... 相似文献
46.
47.
G. A. Afrouzi S. H. Rasouli 《NoDEA : Nonlinear Differential Equations and Applications》2009,16(6):717-730
In this work, motivated by Wu (J Math Anal Appl 318:253–270, 2006), and using recent ideas from Brown and Wu (J Math Anal
Appl 337:1326–1336, 2008), we prove the existence of nontrivial nonnegative solutions to the following nonlinear elliptic
problem:
$\left\{{ll} -\Delta_{p}u+m(x)\,u^{p-1}=\lambda \,a(x)\, u^{\alpha-1}+b(x)\,u^{\beta-1}, & x \in \Omega,\\ u=0, & x\in\partial\Omega. \right.$\left\{\begin{array}{ll} -\Delta_{p}u+m(x)\,u^{p-1}=\lambda \,a(x)\, u^{\alpha-1}+b(x)\,u^{\beta-1}, & x \in \Omega,\\ u=0, & x\in\partial\Omega. \end{array}\right. 相似文献
48.
Ukrainian Mathematical Journal - We study the existence of positive solutions for a nonlinear system$$ {\displaystyle \begin{array}{l}-{M}_1\left(\underset{\varOmega }{\int... 相似文献
49.
The aim of this paper is to study the nonexistence and existence of nonnegative, nontrivial weak solution for a class of general capillarity systems. The proofs rely essentially on the minimum principle combined with the mountain pass theorem. 相似文献
50.
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