%0 Journal Article %A Edward Beckenstein %A Lawrence Narici %A Charles Suffel %T A note on permanently singular elements in topological algebras %J Colloquium Mathematicum %D 1974 %P 115-123 %V 31 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-31-1-115-123/ %R 10.4064/cm-31-1-115-123 %G en %F 10_4064_cm_31_1_115_123