Spectrum perturbations of compact operators in a Banach space

Abstract

For an integer p ≥ 1, let Γp be an approximative quasi-normed ideal of compact operators in a Banach space with a quasi-norm NΓp(.) and the property

Keywords

• banach space
• compact operators
• perturbations
• absolutely p-summing operators
• absolutely (p, 2)-summing operators
• integral operators
• infinite matrices
• 47a10
• 47a55
• 47b10
• 47a75