A note on Jordan’s inequality

Abstract In this paper we obtain some bounds in terms of polynomials for the function sin x x {{\sin x} \over x} , x ∈ [0, π].

Estimates for the constants of Landau and Lebesgue via some inequalities for the Wallis ratio

Some Multiplicative Inequalities for Inner Products and of the Carlson Type

We prove a multiplicative inequality for inner products, which enables us to deduce improvements of inequalities of the Carlson type for complex functions and sequences, and also other known inequalities. Validerad; 2008; Bibliografisk uppgift: Paper id:: 890137; 20080826 (ysko)