arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv math/0607552math.AP
收藏

nonlinear elliptic问题中的奇异现象。从爆破边界解到奇异非线性方程

Singular phenomena in nonlinear elliptic problems. From blow-up boundary solutions to equations with singular nonlinearities

Vicentiu Radulescu

摘要:

在这篇综述中,我们报告了一些最近的结果有关的各种奇异现象的研究中出现的一些类的非线性椭圆方程。我们建立定性结果的存在性,不存在性或唯一性的解决方案,我们专注于以下类型的问题:(i)blow-up边界解的Logistic方程;(ii)Lane-Emden-Fowler方程奇异非线性和次二次对流项。我们研究了这些问题中涉及的各种条款的综合影响:次线性或超线性非线性,奇异非线性项,对流非线性,以及符号变化的潜力。我们还考虑到分歧的非线性问题,我们建立了精确的速率衰减的解决方案,在一些具体的情况下。我们的方法结合了标准的技术基础上的最大值原理与非标准的参数,如Karamata定期变化理论。

英文摘要:

In this survey we report on some recent results related to various singular phenomena arising in the study of some classes of nonlinear elliptic equations. We establish qualitative results on the existence, nonexistence or the uniqueness of solutions and we focus on the following types of problems: (i) blow-up boundary solutions of logistic equations; (ii) Lane-Emden-Fowler equations with singular nonlinearities and subquadratic convection term. We study the combined effects of various terms involved in these problems: sublinear or superlinear nonlinearities, singular nonlinear terms, convection nonlinearities, as well as sign-changing potentials. We also take into account bifurcation nonlinear problems and we establish the precise rate decay of the solution in some concrete situations. Our approach combines standard techniques based on the maximum principle with non-standard arguments, such as the Karamata regular variation theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑