Volume 2, Issue 3 Kun Zhu Hong Zhang Kaiqing Weng A class of new trigonometric inequalities and their sharpenings 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 Kun Zhu Hong Zhang Kaiqing Weng Find more articles with the same keywords Schur-convexity majorization trigonometric inequality Find more articles with the same subject classes 26D05 52A40