Nonlinear aspects of Calderón-Zygmund theory
The classical Calderón-Zygmund theory is concerned with determining the integrability and differentiability properties of linear equations in terms of the regularity of the given data. This is a survey article over a series of nonlinear results for possibly degenerate operators of the type \(-\operatorname{div} a(x,Du)=\mu\) that allows us to start talking of a nonlinear Calderón-Zygmund theory.
scientific article; zbMATH DE number 5824553