Volume 9, Issue 1 Ling Zhu Sharpening of Jordan's inequalities and its applications 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 Ling Zhu Find more articles with the same keywords lower and upper bounds Jordan's inequalities Yang Le inequalities Find more articles with the same subject classes 26D15