Journal of the Indonesian Mathematical Society
VOLUME 29 NUMBER 3 (NOVEMBER 2023)

Revisiting Kantorovich Operators in Lebesgue Spaces

Obie, Maximillian Ventura (Unknown)
Taebenu, Erick Angga (Unknown)
Gunadi, Reinhart (Unknown)
Hakim, Denny Ivanal (Unknown)



Article Info

Publish Date
30 Nov 2023

Abstract

According to the Weierstrass Approximation Theorem, any continuous function on the closed and bounded interval can be approximated by polynomials. A constructive proof of this theorem uses the so-called Bernstein polynomials. For the approximation of integrable functions, we may consider Kantorovich operators as certain modifications for Bernstein polynomials. In this paper, we investigate the behaviour of Kantorovich operators in Lebesgue spaces. We first give an alternative proof of the uniform boundedness of Kantorovich operators in Lebesgue spaces by using the Riesz-Thorin Interpolation Theorem. In addition, we examine the convergence of Kantorovich operators in the space of essentially bounded functions. We also give an example related to the rate of convergence of Kantorovich operators in a subspace of Lebesgue spaces.

Copyrights © 2023






Journal Info

Abbrev

JIMS

Publisher

Subject

Mathematics

Description

Journal of the Indonesian Mathematical Society disseminates new research results in all areas of mathematics and their applications. Besides research articles, the journal also receives survey papers that stimulate research in mathematics and their ...