Local spectral theory for Drazin invertible operators

Pseudo-Inverses in Associative Rings and Semigroups

Michael P. Drazin · American Mathematical Monthly · 1958 · 698 citations

Natural Sciences, Mathematics, Algebra +10

A duality theorem for an arbitrary operator

Errett Bishop · Pacific Journal of Mathematics · 1959 · 107 citations · Full text

Natural Sciences, Maxillofacial Surgery, Representation Theory +9

Weyl Type Theorems for Left and Right Polaroid Operators

Pietro Aiena, Elvis Aponte, Edixon Balzan · Integral Equations and Operator Theory · 2010 · 88 citations

Natural Sciences, Mathematics, Algebra +8

The abstract theorem of Cauchy-Weil

Andrew M. Gleason · Pacific Journal of Mathematics · 1962 · 78 citations · Full text

Natural Sciences, Philosophy, Theoretical Physics +8

Operators which have a closed quasi-nilpotent part

Pietro Aiena, María Luisa Colasante, Manuel González · Proceedings of the American Mathematical Society · 2002 · 60 citations · Full text

Natural Sciences, Property Law, Nuisance +7