The relation between A-harmonic operator and A-Dirac system (Q2441929)

The authors study the relation between an A-harmonic operator \[ -\operatorname{div}A(x,\nabla u)=f(x, \nabla u) \] and A-Dirac systems under controllable growth conditions. By the method of removable singularities for solutions to the A-Dirac systems the authors establish the fact that an A-harmonic operator is a real part of the corresponding A-Dirac system.