Operators and Matrices · Volume 10, Issue 1 Ideal-triangularizability and commutators of constant sign 10-01 Pages 1-13 DOI 10.7153/oam-10-01 Downloads Short PDF Full PDF PNG Authors Roman Drnovšek Marko Kandić Keywords Banach lattices positive operators invariant subspaces commutators Subject classes 46B42 47A15 47B65 47B47