Some remarks on singular solutions of nonlinear elliptic equations. I
We study strong maximum principles for singular solutions of nonlinear elliptic and degenerate elliptic equations of second order. An application is given on symmetry of positive solutions in a punctured ball using the method of moving planes.
Mathematics Subject Classification (2000).35J69 58J05 53C21 35J60
Keywords.Nonlinear elliptic equations strong maximum principle method of moving planes singular solutions
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