Abstract:
We obtain a removability result for the fully nonlinear uniformly elliptic equations F(D 2 u)+f(u)=0. The main theorem states that every solution to the equation in a punctured ball (without any restrictions on the behaviour near the centre of the ball) is extendable to the solution in the entire ball provided the function f satisfies certain sharp conditions depending on F. Previously such results were known for linear and quasilinear operators F. In comparison with the semi- or quasilinear theory the techniques for the fully nonlinear equations are new and based on the use of the viscosity notion of generalised solution rather than the distributional or the weak solutions.
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Accepted May 3, 2000¶Published online November 16, 2000
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Labutin, D. Removable Singularities for Fully Nonlinear Elliptic Equations. Arch. Rational Mech. Anal. 155, 201–214 (2000). https://doi.org/10.1007/s002050000108
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DOI: https://doi.org/10.1007/s002050000108