Volume 19, Issue 3 Maryam Jalili Hamid Reza Moradi Tightening bounds on the numerical radius for Hilbert space 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 Maryam Jalili Hamid Reza Moradi Find more articles with the same keywords numerical radius operator norm inequalities Find more articles with the same subject classes 47A12 47A30 47A63 15A60