Separable solutions of quasilinear Lane-Emden equations

Details Separable solutions of quasilinear Lane-Emden equations Separable solutions of quasilinear Lane-Emden equations

2011-04-04

arxiv.org/abs/1104.0479v3

Mathematics

Analysis of PDEs

To appear in Journal of the European Mathematical Society

Scientific paper

For $0 < p-1 < q$ and $\ge=\pm 1$, we prove the existence of solutions of $-\Gd_pu=\ge u^q$ in a cone $C_S$, with vertex 0 and opening $S$, vanishing on $\prt C_S$, under the form $u(x)=|x|^\gb\gw(\frac{x}{|x|})$. The problem reduces to a quasilinear elliptic equation on $S$ and existence is based upon degree theory and homotopy methods. We also obtain a non-existence result in some critical case by an integral type identity.

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