**Differential/Difference Equations: Mathematical Modeling, Oscillation and Applications**

Editors

**Ioannis Dassios Omar Bazighifan Osama Moaaz**

MDPI • Basel • Beijing • Wuhan • Barcelona • Belgrade • Manchester • Tokyo • Cluj • Tianjin

*Editors* Ioannis Dassios AMPSAS University College Dublin Dublin Ireland

Omar Bazighifan Department of Mathematics, Faculty of Science Hadhramout University Hadhramout Yemen

Osama Moaaz Department of Mathematics, Faculty of Science Mansoura University Mansoura Egypt

*Editorial Office* MDPI St. Alban-Anlage 66 4052 Basel, Switzerland

This is a reprint of articles from the Special Issue published online in the open access journal *Mathematics* (ISSN 2227-7390) (available at: www.mdpi.com/journal/mathematics/special issues/ Differential Difference Equations Modeling Oscillation Applications).

For citation purposes, cite each article independently as indicated on the article page online and as indicated below:

LastName, A.A.; LastName, B.B.; LastName, C.C. Article Title. *Journal Name* **Year**, *Volume Number*, Page Range.

**ISBN 978-3-0365-2387-3 (Hbk) ISBN 978-3-0365-2386-6 (PDF)**

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### **Contents**



### **About the Editors**

#### **Ioannis Dassios**

Ioannis Dassios is currently a UCD Research Fellow/Assistant Professor at University College Dublin, Ireland. His research interests include dynamical systems, mathematics of networks, differential and difference equations, singular systems, fractional calculus, optimization methods, linear algebra, and mathematical modeling (materials, electrical power systems, economic models, etc.). He studied Mathematics, completed a two-year M.Sc. in Applied Mathematics, and obtained his Ph.D. degree at University of Athens, Greece with the grade "Excellent"(highest mark in the Greek system). He had positions at the University of Edinburgh, U.K; University of Manchester, U.K.; and University of Limerick, Ireland. He has published more than 80 articles, has served as a reviewer more than 800 times in more than 100 different journals, has been member in committees of international conferences, and is also member of editorial boards of peer-reviewed journals. Finally, he has received several awards.

#### **Omar Bazighifan**

Omar Bazighifan received his B.S. from Hadhramout University, M.Sc. and Ph.D. degrees in Mathematics from Mansoura University, Mansoura, Egypt. Currently, he is Ph.D. scholar at Hadhramout University, Hadhramout, Yemen. He is also serving as a lecturer of Mathematics. His research interests include qualitative theory of differential equations, and oscillation criteria for differential equations. He has published several research articles in reputed international journals of mathematics. His most recent publication is 'Oscillation Criteria for Nonlinear Delay Differential Equation'.

#### **Osama Moaaz**

Osama Moaaz currently works at the Department of Mathematics, Mansoura University. Osama does research in Analysis and Applied Mathematics. Their current project is 'Qualitative behavior of the solutions of Difference Equations.'
