**Editor-in-Chief**

Carlos Martins da Fonseca

Kuwait College of Science and Technology, Kuwait

CMC of the University of Duesto, Bilbao, Spain

**Editorial Advisory Board**

Natália Bebiano, Department of Mathematics, University of Coimbra, Portugal

Ángeles Carmona, Matemàtica Aplicada III, Universitat Politècnica de Catalunya- BarcelonaTech, Spain

Gi-Sang Cheon, Department of Mathematics, Sungkyunkwan University, Suwon, Korea

Geir Dahl, Department of Mathematics, University of Oslo, Norway

Shmuel Friedland, Department of Mathematics, Statistics, and Computer Science, University of Illinois, Chicago, USA

Catherine Greenhill, School of Mathematics and Statistics, University of New South Wales, Sydney, Australia

Alexander E. Guterman, Department of Mathematics and Mechanics, Moscow State University, Russia

Frank J. Hall, Georgia State University, USA

Charles R. Johnson, College of William and Mary, Williamsburg, USA

Ilias S. Kotsireas, Wilfrid Laurier University, Canada

Bojan Kuzma, Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Slovenia

Thomas Laffey, School of Mathematical Sciences, University College Dublin, Ireland

Kevin Vander Meulen, Department of Mathematics, Redeemer University College, Canada

Marilena Mitrouli, Department of Mathematics, University of Athens, Greece

Jennifer Seberry, University of Wollongong, Australia

Irene Sciriha, Department of Mathematics, Faculty of Science University of Malta, Malta

Simone Severini, Department of Computer Science and Department of Physics & Astronomy, University College London, United Kingdom

Ilya Spitkovsky, College of William & Mary, USA

Tin-Yau Tam, Department of Mathematics & Statistics, Auburn University, USA

Qing-Wen Wang, Shanghai University, China

Raf Vandebril, Dept. Computerwetenschappen, KU Leuven, Belgium

Luis Verde-Star, Department of Mathematics, Universidad Autónoma Metropolitana, Mexico

Ion Zaballa, Departamento de Matemática Aplicada, Universidad del País Vasco-Euskal Herriko Unibertsitatea, Spain

Fuzhen Zhang, Division of Math, Science, and Technology, Farquhar College of Arts and Sciences, Nova Southeastern University, Fort Lauderdale, Florida, USA

**Assistant Editors**

Zhibin Du, School of Mathematics and Information Sciences, Zhaoqing University Guangdong, China

Rosário Fernandes, University of Lisbon, Portugal

**Publisher**

DE GRUYTER Poland

Bogumiła Zuga 32A Str.

01-811 Warsaw, Poland

T: +48 22 701 50 15

**Editorial Contact**

Carlos Martins da Fonseca

spma.editorial@degruyter.com