%0 Journal Article %A Dash, A. T. %T On a Brown-Halmos-Pearcy Lemma %J Canadian journal of mathematics %D 1975 %P 495-495 %V 27 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-059-4/ %R 10.4153/CJM-1975-059-4 %F 10_4153_CJM_1975_059_4