# Boundary singularities of positive solutions of quasilinear Hamilton-Jacobi equations

Abstract : We study the boundary behaviour of the solutions of (E) $\;-\Gd_p u+|\nabla u|^q=0$ in a domain $\Gw \sbs \BBR^N$, when $N\geq p> q>p-1$. We show the existence of a critical exponent $q_* < p$ such that if $p-1 < q < q_*$ there exist positive solutions of (E) with an isolated singularity on $\prt\Gw$ and that these solutions belong to two different classes of singular solutions. If $q_*\leq q < p$ no such solution exists and actually any boundary isolated singularity of a positive solution of (E) is removable. We prove that all the singular positive solutions are classified according the two types of singular solutions that we have constructed.
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https://hal.archives-ouvertes.fr/hal-01095162
Contributor : Laurent Veron <>
Submitted on : Wednesday, September 9, 2015 - 3:02:45 PM
Last modification on : Wednesday, August 14, 2019 - 1:15:19 AM
Long-term archiving on: Monday, December 28, 2015 - 11:11:40 PM

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• HAL Id : hal-01095162, version 5
• ARXIV : 1412.4613

### Citation

Marie-Françoise Bidaut-Véron, Marta Garcia-Huidobro, Laurent Véron. Boundary singularities of positive solutions of quasilinear Hamilton-Jacobi equations. 2015. ⟨hal-01095162v5⟩

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