New representation of the remainder in the Bernstein approximation (Q542879)

This short note presents a new representation of the remainder in the Bernstein approximation based on divided differences and some immediate applications. It is the only known representation of the remainder in the Bernstein approximation of arbitrary functions as a convex combination of divided differences of second-order on known knots. As an application they obtain sharp inequalities for functions possessing bounded divided differences of second-order and a new proof of the classical Weierstrass approximation theorem.