首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   9篇
  完全免费   1篇
  数学   10篇
  2018年   1篇
  2016年   1篇
  2014年   2篇
  2013年   2篇
  2012年   1篇
  2010年   1篇
  2009年   1篇
  2007年   1篇
排序方式: 共有10条查询结果,搜索用时 15 毫秒
1
1.
In this paper, we discuss the limit behaviour of optimal control problems governed by elliptic boundary value problems with equivalued surface when the equivalued surface boundary shrinks to a fixed point on the outer boundary of a bounded domain.  相似文献
2.
3.
In this paper, we study the very weak solutions to some nonlinear elliptic systems with right-hand side integrable data with respect to the distance to the boundary. Firstly, we study the existence of the approximate solutions. Secondly, a priori estimates are given in the framework of weighted spaces. Finally, we prove the existence, uniqueness and regularity of the very weak solutions.  相似文献
4.
The paper deals with a nonlocal problem related to the equilibrium of a confined plasma in a Tokamak machine. This problem involves terms u* (|u > u(x)|) and |u > u(x)|, which are neither local, nor continuous, nor monotone. By using the Galerkin approximate method and establishing some properties of the decreasing rearrangement, we prove the existence of solutions to such problem.  相似文献
5.
We deal with linear parabolic equations related to Gauss measure. Firstly, we study the case of equalities in some comparison results proved by other authors and show that equalities are achieved only in the “symmetrized” situations. Secondly, under other assumptions, we obtain a different form of comparison results and discuss the corresponding case of equalities.  相似文献
6.
This paper deals with certain kinds of boundary value problems with equivalued surface of nonlinear elliptic equations on a domain with thin layer. We introduce the concept of renormalized solution to this problem. Existence and uniqueness of renormalized solutions are given, and the limit behaviour of solutions is studied in this paper.  相似文献
7.
8.
This paper deals with a nonlocal free boundary problem arising in the study of the dynamics of the confinement of a plasma in a Stellarator device. The free boundary represents the separation between the plasma and vacuum regions, and the nonlocal term involves the notions of relative rearrangement and monotone rearrangement. We establish some new properties on the decreasing rearrangement that can be used to prove the convergence of the approximate problem, and then prove the existence of solutions by Galerkin method. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献
9.
本文研究了Robin边界条件下$p(x)$-Laplacian方程特征值问题. 利用变指数Sobolev空间理论, 我们用Luxemburg范数来定义Rayleigh商, 并给出该Rayleigh商的最小值点对应的Euler-Lagrange方程. 根据Ljusternik-Schnirelman原理, 我们证明了Robin边值问题存在无穷多特征值序列, 其中最小的特征值存在且是严格大于零的, 并且与最小的特征值相对应的特征函数不变号.  相似文献
10.
This paper deals with a kind of hyperbolic boundary value problems with equivalued surface on a domain with thin layer. Existence and uniqueness of solutions are given, and the limit behavior of solutions is studied in this paper. Project partially supported by NSFC (No:10401009) and NCET of China (No:060275).  相似文献
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号