2004-Fez conference on Differential Equations and Mechanics.
Electronic Journal of Differential Equations,
Conference 11, 2004, pp. 129-134.

Title: Stability of the principal eigenvalue of a nonlinear elliptic system

Authors: Abdelouahed El Khalil (Ecole Polytechnic School Montreal, Canada)
         Mohammed Ouanan (Faculty of  sciences Dhar-Mahraz, Morocco)
	 Abdelfattah Touzani (Faculty of  sciences Dhar-Mahraz, Morocco)
 
Abstract: 
 This paper concerns some special properties of the principal eigenvalue
 of nonlinear elliptic systems with Dirichlet boundary conditions.
 We study the stability with respect to the exponents $p$ and $q$;
 and the dependence on the domain variations.

Published October 15, 2004.
Math Subject Classifications: 35P20, 35J70, 35J20.
Key Words: p-Laplacian operator; principal eigenvalue; stability; 
           segment property; dependence on the domain.