Volume 3, Issue 4 R. T. W. Martin Characterization of the unbounded bicommutant of C0 (N) contractions 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 R. T. W. Martin Find more articles with the same keywords contractions of class C0 (N) unbounded double commutant H∞ functional calculus Find more articles with the same subject classes 47A45 47A50