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Asymptotic behavior of positive solutions of some quasilinear elliptic problems

机译:一类拟线性椭圆问题正解的渐近性。

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We discuss the asymptotic behavior of positive solutions of the quasilinear elliptic problem -Delta(p)u = au(p-1) - b(x)U-q, upartial derivative Omega = 0, as q -> p - 1 + 0 and as q -> infinity, via a scale argument. Here Delta(p) is the (P)-Laplacian with 1 < p < infinity and q > p - 1. If p = 2, such problems arise in population dynamics. Our main results generalize the results for p = 2, but some technical difficulties arising from the nonlinear degenerate operator -Delta(p) are successfully overcome. As a by-product, we can solve a free boundary problem for a nonlinear p-Laplacian equation.
机译:我们讨论拟线性椭圆问题-Delta(p)u = au(p-1)-b(x)Uq,u 偏导数Omega = 0的正解的渐近行为,因为q-> p-1 + 0并通过比例参数将其设为q->无穷大。在这里,Delta(p)是(p)-Laplacian,其中1 <无穷大且q> p-1。如果p = 2,则这些问题会在种群动态中出现。我们的主要结果推广了p = 2的结果,但是成功克服了非线性简并算子-Delta(p)带来的一些技术难题。作为副产品,我们可以解决非线性p-Laplacian方程的自由边界问题。

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