Mathematical Optimization Theory and Operations Research : 19th International Conference MOTOR 2020 Novosibirsk Russia July 6–10 2020 Proceedings Discrete Optimization Mathematical Programming Game Theory Scheduling Problem Heuristics and Metaheuristics Operational Research Applications. This book constitutes the proceedings of the 19th International Conference on Mathematical Optimization Theory and Operations Research MOTOR 2020 held in Novosibirsk Russia in July 2020. The 31 full papers presented in this volume were carefully reviewed and selected from 102 submissions. The papers are grouped in these topical sections: discrete optimization; mathematical programming; game theory; scheduling problem; heuristics and metaheuristics; and operational research applications.