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arXiv 1111.2207math.AP
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半线性椭圆型方程的整体大解

Entire large solutions for semilinear elliptic equations

Louis Dupaigne, Marius Ghergu, Olivier Goubet, Guillaume Warnault

摘要:

本文在${\mathbf R}^D$ $(D\ge3)$中分析了半线性椭圆型方程$Δu=ρ(x) f(u)$,$u>0$,特别着重于对整个大解的定性研究,即解$u$使得$\lim_{|x|\rightarrow +\infty}u(x)=+\infty$ .假设$f$满足Keller-Osserman增长假设,并且$ρ$在适当的意义下在无穷远处衰减,我们证明了整体大解的存在性.然后,我们讨论更微妙的问题,在无穷大的渐近行为,唯一性和对称性的解决方案。

英文摘要:

We analyze the semilinear elliptic equation $Δu=ρ(x) f(u)$, $u>0$ in ${\mathbf R}^D$ $(D\ge3)$, with a particular emphasis put on the qualitative study of entire large solutions, that is, solutions $u$ such that $\lim_{|x|\rightarrow +\infty}u(x)=+\infty$. Assuming that $f$ satisfies the Keller-Osserman growth assumption and that $ρ$ decays at infinity in a suitable sense, we prove the existence of entire large solutions. We then discuss the more delicate questions of asymptotic behavior at infinity, uniqueness and symmetry of solutions.

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。

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