Electronic Journal of Differential Equations,
Vol. 2010(2010), No. 111, pp. 1-13.

Title: Generalized Picone and Riccati inequalities 
       for half-linear differential operators
       with arbitrary elliptic matrices
       
Authors: Simona Fisnarova (Mendel Univ., Czech Republic)
         Robert Marik     (Mendel Univ., Czech Republic)

Abstract:
  In the article, we extend the well-known Picone identity for
  half-linear partial differential equations to equations with
  anisotropic p-Laplacian.

Submitted June 29, 2010. Published August 10, 2010.
Math Subject Classifications: 35J92, 35B05.
Key Words: Half-linear differential equation; second order equation; 
           Picone identity; conjugacy; oscillation.