![Sample our Mathematics & Statistics journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/5943/TOC-Subject-Sample-2021-Mathematics-Statistics.jpg"})
Abstract
An elementary proof of the no-retraction theorem in the plane is given by means of the complex square root.
Keywords:
Acknowledgments
This work was partially supported by projects 20020190100039BA UBACyT and PIP 11220130100006CO CONICET. The author thanks Prof. Rafael Ortega and Prof. Mónica Clapp for their comments on a first version of this manuscript. Also, the author thanks the anonymous reviewers and the editors for the careful reading of the manuscript and fruitful suggestions.
Additional information
Notes on contributors
Pablo Amster
Departamento de Matemática - Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires & IMAS-CONICET – Ciudad Universitaria Pab. I – 1428 Buenos Aires, Argentina [email protected]