Columbia subject headings:
Mathematical physics.
Relaxation methods (Mathematics)
Transformations (Mathematics)
Harvard subject headings:
Condensed matter
Engineering
Integral transforms.
Mathematical physics.
Numerical analysis.
Physics
Plasma (Ionized gases)
Quantum theory
Relaxation methods (Mathematics)
Princeton subject headings:
Integral transforms.
Mathematical physics.
Numerical analysis.
Relaxation methods (Mathematics)