Volume 17, Issue 3 Cheikh Ould Hamoud Invertible elements and commutativity in Banach 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 Cheikh Ould Hamoud Find more articles with the same keywords Banach algebra invertible element commutativity spectral radius radical Find more articles with the same subject classes 46H05 46H20