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arXiv 2008.10220math.AP
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具有超临界源梯度项的拟线性椭圆型方程解的Liouville结果和渐近性

Liouville results and asymptotics of solutions of a quasilinear elliptic equation with supercritical source gradient term

Marie-Françoise Bidaut-Veron

摘要:

考虑椭圆型拟线性方程$Δ$ m u = u p| $\nabla$使用|其中q $\ge$ m且p > 0,1 < m < N。我们的主要结果是一个Liouville型性质,即RN中所有的正C1解都是常数.我们还给出了它们的渐近性质:在外部区域RN \B r 0中的所有解都是有界的. B r 0\ {0}中的解可以推广为B r 0中的一个连续函数。RN\ {0}中的解有一个有限极限l $\ge$ 0为|x| $\rightarrow$ $\infty$ .我们的主要论点是一个伯恩斯坦估计的梯度的权力的解决方案,结合一个精确的Osserman型估计的方程所满足的梯度。

英文摘要:

We consider the elliptic quasilinear equation --$Δ$ m u = u p |$\nabla$u| q in R N with q $\ge$ m and p > 0, 1 < m < N. Our main result is a Liouville-type property, namely, all the positive C 1 solutions in R N are constant. We also give their asymptotic behaviour : all the solutions in an exterior domain R N \B r0 are bounded. The solutions in B r0 \ {0} can be extended as a continuous functions in B r0. The solutions in R N \ {0} has a finite limit l $\ge$ 0 as |x| $\rightarrow$ $\infty$. Our main argument is a Bernstein estimate of the gradient of a power of the solution, combined with a precise Osserman's type estimate for the equation satisfied by the gradient.

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