Volume 18, Issue 1 Changsen Yang Dan Li Some improvements about numerical radius inequalities 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 Changsen Yang Dan Li Find more articles with the same keywords numerical radius Young-type inequality operator norm operator matrix Find more articles with the same subject classes 47A12 47A30 15A60 47B10