Harnack inequalities and B\^ocher-type theorems for conformally invariant fully nonlinear degenerate elliptic equations

We give a generalization of a theorem of B\^ocher for the Laplace equation to a class of conformally invariant fully nonlinear degenerate elliptic equations. We also prove a Harnack inequality for locally Lipschitz viscosity solutions and a classification of continuous radially symmetric viscosity solutions.