Invertibility in nest algebras

Avraham Feintuch, Alan Lambert
1984 Proceedings of the American Mathematical Society  
Let 7 denote a complete nest of subspaces of a complex Hubert space V., and let C denote the nest algebra defined by 7 ■ Let K denote the ideal of compact operators on )i. If J has no infinite-dimensional gaps then
doi:10.1090/s0002-9939-1984-0746092-2 fatcat:ebp64tl6bbhnlmgizxw25pqqjq