Operators and Matrices · Volume 11, Issue 3 The invertibility for linear combinations of bounded linear operators with closed range 11-48 Pages 715-723 DOI 10.7153/oam-11-48 Downloads Short PDF Full PDF PNG Authors Guojun Hai Chegen Bao Alatancang Chen Keywords invertibility bounded operator linear combination EP operator Subject classes 47A05 47A10 47B99