A constructive proof of a theorem by Ferreira-Zantema

TL;DR

This paper provides a constructive proof of a theorem by Ferreira-Zantema, addressing a problem posed by G. Moser, and offers a new approach to understanding this mathematical result.

Contribution

It presents the first constructive proof of Ferreira-Zantema's theorem, filling a gap in the existing literature and enabling further applications.

Findings

Constructive proof of Ferreira-Zantema's theorem

Addresses a problem raised by G. Moser

Enhances understanding of the theorem's implications

Abstract

This note was written in Jan. 23, 2015 to answer a problem raised by G. Moser, who asked a constructive proof of a theorem by Ferreira-Zantema.