- periodicity of function
- мат. периодичность функции
Большой англо-русский и русско-английский словарь. 2001.
periodicity of function
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Periodicity — is the quality of occurring at regular intervals or periods (in time or space) and can occur in different contexts: * A clock marks time at periodic intervals. * A metronome ticks at periodic intervals of time. * A publication published at… … Wikipedia
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Work function — In solid state physics, the work function is the minimum energy (usually measured in electron volts) needed to remove an electron from a solid to a point immediately outside the solid surface (or energy needed to move an electron from the Fermi… … Wikipedia
Elliptic function — In complex analysis, an elliptic function is a function defined on the complex plane that is periodic in two directions (a doubly periodic function) and at the same time is meromorphic. Historically, elliptic functions were discovered as inverse… … Wikipedia
Almost periodic function — In mathematics, almost periodic functions are functions of a real number that are periodic up to a small error, first studied by Harald Bohr. There are generalizations to almost periodic functions on locally compact abelian groups. Almost… … Wikipedia
Wannier function — The Wannier functions are a complete set of orthogonal functions used in solid state physics. They were introduced by Gregory Wannier. [http://dx.doi.org/10.1103/PhysRev.52.191 The structure of electronic excitation levels in insulating crystals … Wikipedia
List of trigonometric identities — Cosines and sines around the unit circle … Wikipedia
Discrete Fourier transform — Fourier transforms Continuous Fourier transform Fourier series Discrete Fourier transform Discrete time Fourier transform Related transforms In mathematics, the discrete Fourier transform (DFT) is a specific kind of discrete transform, used in… … Wikipedia
Discrete-time Fourier transform — In mathematics, the discrete time Fourier transform (DTFT) is one of the specific forms of Fourier analysis. As such, it transforms one function into another, which is called the frequency domain representation, or simply the DTFT , of the… … Wikipedia
