**About the Editors**

**Feliz Manuel Minh ´os** has a PhD and Habilitation Degree, both in Mathematics, is the Coordinador of the Research Center on Mathematics and Applications, Director of the PhD Program in Mathematics of the University of Evora, Portugal, has published a large number of papers, books, ´ monographs, proceedings, etc., and is member of the Editorial Board of several international journals. The main research interests are in Differential Equations, Boundary Value Problems with variational and topological methods, Fixed Point theory, Impulsive problems, functional differential equations, nonlocal problems, degree theory, lower and upper solutions and Green´s functions, among others.

**Jo ˜ao Fialho** is a PhD in Mathematics of University of Evora, Portugal. He is currently Senior ´ Lecturer and MBA and Graduate Programmes Director at the British University of Vietnam. He has diverse practical working experience and teaching experience, in the areas of actuarial sciences, pricing, finance and data analysis, accumulated at the service of several multinational companies. In the last 8 years, he has accumulated experience in Higher Education, having already taught in North America, Europe, Middle East and Asia, accumulating positions of Department Director and research coordination. Prof. Fialho is an active researcher in the field of differential equations, mathematical modelling, big data and data analytics, with proven experience by a wide range of international publications, books and various communications at international conferences, in the area of mathematics and applications.
