Some remarks on singular solutions of nonlinear elliptic equations. III: viscosity solutions, including parabolic operators
arXiv:1101.2833
Abstract
The paper concerns singular solutions of nonlinear elliptic equations, which include removable singularities for viscosity solutions, a strengthening of the Hopf Lemma including parabolic equations, Strong maximum principle and Hopf Lemma for viscosity solutions including also parabolic equations.