Boundary Singularities ofN-Harmonic Functions
Rouba Borghol, Лаурент Верон · Communications in Partial Differential Equations · 2007
We study the behaviour near a boundary point a of a positive N-harmonic function u which vanishes on the boundary except at a. The conformal invariance of the equation plays a fundamental role in this description. By using spherical variables, we construct a new series of separable p-harmonic functions in ℝN.