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envelope function

См. также в других словарях:

  • Envelope — En vel*ope (?; 277), Envelop En*vel op (?; 277), n. [F. enveloppe.] 1. That which envelops, wraps up, encases, or surrounds; a wrapper; an inclosing cover; esp., the cover or wrapper of a document, as of a letter. [1913 Webster] 2. (Astron.) The… …   The Collaborative International Dictionary of English

  • Envelope theorem — The envelope theorem is a basic theorem used to solve maximization problems in microeconomics. It may be used to prove Hotelling s lemma, Shephard s lemma, and Roy s identity. The statement of the theorem is:Consider an arbitrary maximization… …   Wikipedia

  • envelope — /en veuh lohp , ahn /, n. 1. a flat paper container, as for a letter or thin package, usually having a gummed flap or other means of closure. 2. something that envelops; a wrapper, integument, or surrounding cover. 3. Biol. a surrounding or… …   Universalium

  • Contrast transfer function — Typical contrast transfer function observed from an electron micrograph The contrast transfer function is a type of optical transfer function that affects images collected in an transmission electron microscope. The contrast transfer function… …   Wikipedia

  • push the envelope — Envelope En vel*ope (?; 277), Envelop En*vel op (?; 277), n. [F. enveloppe.] 1. That which envelops, wraps up, encases, or surrounds; a wrapper; an inclosing cover; esp., the cover or wrapper of a document, as of a letter. [1913 Webster] 2.… …   The Collaborative International Dictionary of English

  • Electronic envelope — An electronic envelope or e envelope is almost like a postal Envelope in function. Where a paper Envelope privately encloses its contents like a mail message, so an Electronic envelope privately encloses its contents like an e mail message.… …   Wikipedia

  • Ambiguity function — In pulsed radar and sonar signal processing, an ambiguity function isa two dimensional function of time delay and Doppler frequencychi( au,f) showing the distortion of an uncompensated matched filter (sometimes called pulse compression) due to… …   Wikipedia

  • Transfer function — A transfer function (also known as the system function[1] or network function) is a mathematical representation, in terms of spatial or temporal frequency, of the relation between the input and output of a linear time invariant system. With… …   Wikipedia

  • Window function — For the term used in SQL statements, see Window function (SQL) In signal processing, a window function (also known as an apodization function or tapering function[1]) is a mathematical function that is zero valued outside of some chosen interval …   Wikipedia

  • Sinc function — In mathematics, the sinc function, denoted by scriptstylemathrm{sinc}(x), and sometimes as scriptstylemathrm{Sa}(x),, has two definitions, sometimes distinguished as the normalized sinc function and unnormalized sinc function. In digital signal… …   Wikipedia

  • Cell envelope — The cell envelope is the cell membrane and cell wall plus an outer membrane, if one is present. Most bacterial cell envelopes fall into two major categories: Gram positive and Gram negative. These are differentiated by their Gram staining… …   Wikipedia

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