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Holstein-Primakoff transformation
(quantum mechanics) A mapping to the spin operators from boson creation and annihilation operators, effectively truncating their infinite-dimensional Fock space to finite-dimensional subspaces.
Foldy-Wouthuysen transformation
(physics) A unitary transformation of the orthonormal basis in which both the Hamiltonian and the state are represented; it has applications in high-energy physics.
Foldy-Wouthuysen transformations
Cartesian natural transformation
(category theory) A natural transformation whose naturality squares are pullbacks.
Hosaka-Cohen transformation
A mathematical method of converting a particular two-dimensional scalar magnetic field map to a particular two-dimensional vector map.
Cartesian natural transformations
Hadamard transforms
Walsh transforms
plural of Walsh transform
Fourier transforms
Z-transform
(mathematics) A transform that converts a discrete time-domain signal into a complex frequency-domain representation.