On rank one elements

Wydawnictwa / Czasopisma IMPAN / Studia Mathematica / Wszystkie zeszyty

Robin Harte Studia Mathematica 117 (1995), 73-77 DOI: 10.4064/sm-117-1-73-77

Without the "scarcity lemma", two kinds of "rank one elements" are identified in semisimple Banach algebras.