S. Leonardi
A maximum principle for linear elliptic systems with discontinuous coefficients

Comment.Math.Univ.Carolinae 45,3 (2004) 457-474.

Abstract:We prove a maximum principle for linear second order elliptic systems in divergence form with discontinuous coefficients under a suitable condition on the dispersion of the eigenvalues of the coefficients matrix.

Keywords: maximum principle, elliptic systems
AMS Subject Classification: 35B50, 35R05, 35J55, 35B65