Volume 5, Issue 3 Octavian Crăsnaru About von Neummann's inequality for d-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 Octavian Crăsnaru Find more articles with the same keywords d-contraction operator Hilbert spaces shift Find more articles with the same subject classes 47C10