Volume 15, Issue 4 Thanin Quartz Ilya M. Spitkovsky On the Stampfli point of some operators and matrices 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 Thanin Quartz Ilya M. Spitkovsky Find more articles with the same keywords Stampfli point (center of mass) of operators almost normal operators maximal numerical range Roberts orthogonality Find more articles with the same subject classes 47B02 47B28 15A60