On the behaviour of \(\infty\)-harmonic functions near isolated points
The author obtains some informations about \(\infty\)-harmonic functions in the setting of viscosity solutions. He considers bounded solutions and solutions that are only locally bounded near exceptional points. He makes no use of approximating sequences but of the Harnack inequality and frequent use of the comparison principle. Particulary interesting is the appendix containing an example of a strongly singular solution and the study of the case of the ball.
scientific article; zbMATH DE number 2102587