Left quotients of C*-algebras, II: Atomic parts of left quotients

Citation
Lg. Brown et Nc. Wong, Left quotients of C*-algebras, II: Atomic parts of left quotients, J OPER THEO, 44(1), 2000, pp. 207-222
Citations number
24
Categorie Soggetti
Mathematics
Journal title
JOURNAL OF OPERATOR THEORY
ISSN journal
03794024 → ACNP
Volume
44
Issue
1
Year of publication
2000
Pages
207 - 222
Database
ISI
SICI code
0379-4024(200022)44:1<207:LQOCIA>2.0.ZU;2-G
Abstract
Let A be a C*-algebra. Let z be the maximal atomic projection in A**. By a theorem of Brown, an element z in A** has a continuous atomic part, i.e. zx = za for some a in A, whenever x is uniformly continuous on the set of pur e states of A. Let L be a closed left ideal of A. Under some additional con ditions, we shall show that if lr is uniformly continuous on the set of pur e states of A killing L, or its weak* closure, then x has a continuous atom ic part module L** in an appropriate sense.