Columbia subject headings:
Geometry, Differential.
Perturbation (Mathematics)
Perturbation (Quantum dynamics)
Plasma (Ionized gases)
Statistical mechanics.
Harvard subject headings:
Geometry, Differential.
Perturbation (Mathematics)
Perturbation (Quantum dynamics)
Plasma (Ionized gases)
Statistical mechanics.
Princeton subject headings:
Geometry, Differential.
Perturbation (Mathematics)
Perturbation (Quantum dynamics)
Plasma (Ionized gases)
Statistical mechanics.