Electronic Journal of Differential Equations,
Vol. 2003(2003), No. 78, pp. 1-13.

Title: Estimates for critical groups of solutions to quasilinear
       elliptic systems

Authors: Jose Carmona   (Univ. de Almeria, Spain)
         Silvia Cingolani (Politecnico di Bari, Italy)
	 Giuseppina Vannella (Politecnico di Bari, Italy)

Abstract: 
 In this work we study a class of functionals, defined on Banach spaces,
 associated with quasilinear elliptic systems. Firstly, we prove some
 regularity results about the critical points of such functionals and
 then we estimate the critical groups in each critical point via its
 Morse index.
 
Submitted January 15, 2003. Published July 28, 2003.
Math Subject Classifications: 58E60, 35J60, 35B65.
Key Words: Quasilinear elliptic systems; critical groups; Morse index.