Volume 12, Issue 2 Mohsen Erfanian Omidvar Hamid Reza Moradi Khalid Shebrawi Sharpening some classical numerical radius inequalities 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 Mohsen Erfanian Omidvar Hamid Reza Moradi Khalid Shebrawi Find more articles with the same keywords numerical radius operator norm hyponormal operator AM-GM Inequality Find more articles with the same subject classes 47A12 47A30