Mathematical optimization theory and operations research : 22nd International Conference MOTOR 2023 Ekaterinburg Russia July 2 8 2023 : proceedings This book constitutes the refereed proceedings of the 22nd International Conference on Mathematical Optimization Theory and Operations Research MOTOR 2023 held in Ekaterinburg Russia during July 2 8 2023. The 28 full papers and 1 short paper included in this book were carefully reviewed and selected from 89 submissions. They were organized in topical sections as follows: Mathematical programming and applications; discrete and combinatorial optimization; stochastic optimization; scheduling; game theory; and optimal control and mathematical economics. The book also contains one invited talk in full paper length.