Volume 4, Issue 1 Maria Adam John Maroulas Limited approximation of numerical range of normal matrix 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 Maria Adam John Maroulas Find more articles with the same keywords compressions eigenvalue numerical range Find more articles with the same subject classes 15A18 15A60 47A20