Boulbeba Abdelmoumen, Aref Jeribi ,Maher Mnif( Departement de Mathmatiques,Universite de Sfax,Facultdes Sciences de Sfax,Route de Soukra,Km 3.5,B.P.1171,3000,Sfax,Tunisie)
Abstract:
Keywords:
measures of noncompactness and weak noncompactness in Banach spaces; Fredholm operators; essential spectra