... Littiewood, and G. Polya, Inequalities, Cambridge University Pr ess, Cambridge, UK, 1934.3 B. C. Yang, On a more accurate Hardy-Hilbert-type inequality and its applications,” Acta MathematicaSinica, ... Journal of Inequalities and Applicationswhere the constant factors π and π2are the best possible also. Expression 1.2 is called a more accurate form of 1.1. Some more accurate inequalities ... Beijing, China, 2009.7 J. Kuang, Applied Inequalities, Shangdong Science and Technology Press, Jinan, China, 2004.Journal of Inequalities and Applications 53 By 2.5, 2.12, 2.13,and0<λ<s,...