- Classification of second order partial differential equations into elliptic, parabolic and hyperbolic
- Complete basis
- Control theory
- Dirac equation
- Finite element method
- Hamilton's equations
- Hans Petter Langtangen
- History of quantum mechanics
- Mathematical formulation of quantum field theory
- Maxwell's equations
- Numerical analysis
- Schrödinger equation
- Schrödinger equation for a one dimensional particle
- Separation of variables
- System of partial differential equations