Preface: Combinatorial Optimization ISCO 2018

Combinatorial optimization problems arise in different domains of production, telecommunication, economics, etc. Various exact, heuristic, and metaheuristic approaches have been devised for analysing and solving hard combinatorial optimization problems. Moreover, great development has been seen in graph theory and combinatorics that are central tools in combinatorial optimization. In this issue, several combinatorial optimization problems and resolution techniques as well as structural aspects of graphs and combinatorics are considered