Volume 11, Issue 3 P. W. Ng Tracy Robin Density of a normal subgroup of the invertibles in certain multiplier algebras Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors P. W. Ng Tracy Robin Find more articles with the same keywords C✻-algebras multiplier algebras general linear group normal subgroup Busby invariant absorbing extensions Find more articles with the same subject classes 46L05