Vol. 22 No. 1 (2021): Divulgaciones Matemáticas

The Editorial Board of Divulgaciones Matemáticas is pleased to present the Vol. 22, No. 1, 2022. The articles contained in this volume are those received during the second semester of the year 2020 and during the first semester of the year 2021, wich ones were evaluated and accepted for publication, before the edition of this volume.

It is important to note, that despite the low demand for articles by authors and the complicated global situation regarding the COVID-19 pandemic that is being experienced, in particular, in our country Venezuela, the journal could receive thirteen 13 works of which six (6) did not approve the evaluation stage by the respective arbitrators. So, in this number are published five (5) articles in the Research Articles section, two (2) articles in the Expository and Historical Articles section and a manuscript with the solution of two (2) problems presented in the Problems and Solutions section, presenting this three new problems to solve proposed in the Mathematical Olympiad of Central America and the Caribbean 2020, organized by Panama and held virtually.

The editorial work related to this issue is the result of the efforts of Editorial Board and the Chief Editor, members of the Department of Mathematics of the Experimental Faculty of Sciences from the University of Zulia. The Editors want to express their gratitude to all of those who made this volume possible: to the authors of the presented works, who gave their vote of confidence to the journal; to the

referees, who evaluated the articles with selfless work, guaranteeing the quality standards of the journal and significantly improving the way of working; to the editorial team of Divulgaciones Matemáticas; and especially to Professor José Heber Nieto, for his contribution to the Problems and Solutions section. To all of them, thanks a lot.

The journal is now in the portal of Revistas Científicas y Humanísticas de la Universidad del Zulia (ReviCyHLUZ) wich oficial webpage is: produccioncientificaluz.org. Now the articles are identify with the letterhead of Sistema de Servicios Bibliotecarios y de Información de LUZ (SERBILUZ). Furthermore, the journal have two oficial webpages:

divmat.demat-fecluz.org and produccioncientificaluz.org,

where will be published the articles y it will may download in a free way. However, the transfer of the files to the SERBILUZ platform is carried out gradually, for which the authors are suggested to visit the main address: divmat.demat-fecluz.org. All these with the purpose to give more expantion and recognition to the journal.

Finally, the Editorial Board of Divulgaciones Matemáticas ask for apologize to the authors of the articles published here for the slight delay in the publication of this issue and for the inconvenience that this may have caused them, we thank them for wait. Furthermore, we invite the Venezuelan and international mathematical community to continue giving their support by submitting their articles to our journal for evaluation and possible publication.