Journal of Inequalities and Applications
Volume 4 (1999), Issue 2, Pages 175-181

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

Copyright © 1999 Samir Karaa. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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