International Journal of Mathematics and Mathematical Sciences 
Volume 2003 (2003), Issue 37, Pages 2379-2387
doi:10.1155/S0161171203202088

Spectral inclusions and stability results for strongly continuous semigroups

Abdelkader Elkoutri and Mohamed Aziz Taoudi

 Department of Mathematics, Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakesh 40000, Morocco
Received 12 February 2002

Abstract

We prove some spectral inclusions for strongly continuous semigroups. Some stability results are also established.