Volume 15, Issue 4 Wei-dong Jiang Feng Qi Some sharp inequalities involving Seiffert and other means and their concise proofs 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 Wei-dong Jiang Feng Qi Find more articles with the same keywords inequality mean monotonicity unified and concise proof sine cosine Seiffert mean Find more articles with the same subject classes 26E60 11H60 26A48 26D05 33B10