Operators and Matrices · Volume 13, Issue 4 α-Fredholm operators relative to invariant subspaces 13-65 Pages 921-936 DOI 10.7153/oam-2019-13-65 Downloads Short PDF Full PDF PNG Authors S. Sánchez-Perales S. Palafox Slaviša V. Djordjević Keywords α-closed subspaces α-Fredholm operators invariant subspaces Subject classes 47A53