Mathematical physics Physics 29 Mathematics 17 Quantum theory 14 Differential equations, Partial 13 Engineering mathematics 13 Data processing 9 Mathematical analysis 7 Geometry, Differential 5 Green's functions 5 Group theory 5 Nonlinear theories 5 Quantum groups 5 Differential equations 4 Matrices 4 Numerical analysis 4 Physicists 4 Relativity (Physics) 4 Chemistry, Physical and theoretical 3 Congresses 3 Density functionals 3 Hamiltonian systems 3 Mathematical Physics 3 Mathematical statistics 3 Numerical calculations 3 Quantum field theory 3 Space and time 3 Statistical mechanics 3 Statistical physics 3 Stochastic analysis 3