Volume 2, Issue 4 Donald Sarason Unbounded operators commuting with restricted backward shifts 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 Donald Sarason Find more articles with the same keywords Restricted backward shift commutant lifting functions of bounded characteristic Nevanlinna class Toeplitz operator Find more articles with the same subject classes 47B35 47A20 30D50