Scientific theories

Time-frequency localization

Wavelets

Cepstrum

Frequency-domain representation

Spectral composition

Anisotropy

Propagation delay

Phase shift

Phase relationship

Mutual entrainment

Coupled oscillators

Orthogonality

Normal modes

Noether's theorem

Hamiltonian

Ising model

Canonical ensemble

Internal energy

Bose-Einstein distribution

Helmholtz free energy

Grand potential

Hydrophobicity

Chemical potential

Interfacial energy

Heterogeneous nucleation

Supercooling

Metastability

Nucleation

Creep

Linear elasticity

Flexure formula

Parallel planes

Optimality theory

Gene–environment correlation

Gene-environment interaction

Glitch energy

Nyquist-Shannon sampling theorem

Discrete-time model

Static model

Deterministic model

Model misspecification

Autoregressive neural network

Autoregressive model

Non-stationarity

Stationarity

Structural break

Penalized likelihood

Long memory

Long-range dependence

Random process