Journal of Inequalities and Applications 
Volume 4 (1999), Issue 2, Pages 175-181
doi:10.1155/S1025583499000351

Inequalities for eigenvalue functionals

Samir Karaa

 Laboratoire des Mathématiques pour I'industrie et la physique, CNRS UMR 5640, Université Paul Sabatier, 118 route de Narbonne, Toulouse 31062, France
Received 29 October 1998; Revised 21 January 1999

Abstract

We give sharp estimates for some eigenvalue functionals, and we indicate the optimal solutions.