Mathematical physics Mathematics Applications of Mathematics 177 Theoretical, Mathematical and Computational Physics 126 Mathematical Methods in Physics 88 Engineering mathematics 53 Physics 50 Differential Equations 46 Differential equations 46 Mathematical and Computational Engineering Applications 45 Physique mathématique 44 System theory 41 Complex Systems 39 Mathématiques 39 Engineering-Data processing 36 Mechanics 33 SCIENCE 29 Classical Mechanics 26 Mathematical Physics 26 Data processing 25 Computational Mathematics and Numerical Analysis 22 Mechanics, Applied 22 Probabilities 22 Probability Theory 22 Mathematical analysis 20 Mathematics-Data processing 20 Mathematical models 19 Analysis 18 Dynamical Systems 17 Dynamical systems 17