Volume 17, Issue 1 Muyan Jiang Ilya M. Spitkovsky Numerical ranges of some Foguel operators 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 Muyan Jiang Ilya M. Spitkovsky Find more articles with the same keywords numerical range Foguel operator Toeplitz operator Schur complement Find more articles with the same subject classes 47A12 30H10 47A08 47B02 47B35 47B37