About this article
Published Online: Apr 09, 2020
Page range: 95 - 97
Received: Jun 20, 2019
Accepted: Jul 15, 2019
DOI: https://doi.org/10.2478/auom-2020-0006
Keywords
© 2020 Gamaliel Cerda-Morales, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Cerda-Morales, Gamaliel
Institute of Mathematics, Pontificia Universidad Católica de ValparaísoChile