Fourier 154389 204653690 2008-04-10T09:12:50Z Thijs!bot 1392310 robot Adding: [[no:Fourier]], [[ro:Fourier (dezambiguizare)]] '''Fourier''' ({{pronEng|ˈfʊərieɪ}}, French pronunciation {{IPA2|fuʁie}}) may refer to: *[[Charles Fourier]] (1772–1837), a French utopian socialist thinker *[[Joseph Fourier]] (1768–1830), a French mathematician and physicist **Mathematics, physics, and engineering terms named in his honor for his work on the concepts underlying them: ***Mathematics tools: ****The [[Fourier mode]], a simple sinusoidal function such as <math>x = sin \theta</math>, in its role as a component of a Fourier series ****The [[Fourier series]], a series, a weighted sum of component normal Fourier modes, the result of Fourier analysis ****[[Fourier analysis]], the analysis of a periodic function by decomposition into a Fourier series ****The [[Fourier transform]], the type of linear canonical transform that is the generalization of the Fourier series ****The [[Fourier operator]], the kernel of the Fredholm integral of the first kind that defines the continuous Fourier transform ****[[Fourier inversion theorem]], any one of several theorems by which Fourier inversion recovers a function from its Fourier transform ****[[List of Fourier-related transforms]], a list of linear transformations of functions related to Fourier analysis ****[[Short-time Fourier transform]] or short-term Fourier transform (STFT), a Fourier transform during a short term of time, used in the area of signal analysis ****[[Fractional Fourier transform]] (FRFT), a linear transformation generalizing the Fourier transform, used in the area of harmonic analysis ****[[Discrete-time Fourier transform]] (DTFT), the reverse of the Fourier series, a special case of the Z-transform around the unit circle in the complex plane ****[[Discrete Fourier transform]] (DFT), occasionally called the finite Fourier transform, the Fourier transform of a discrete periodic sequence (yielding discrete periodic frequencies), which can also be thought of as the DTFT of a finite-length sequence evaluated at discrete frequencies ****[[Fast Fourier transform]] (FFT), a fast algorithm for computing a Discrete Fourier transform ****[[Generalized Fourier series]], generalizations of Fourier series that are special cases of decompositions over an orthonormal basis of an inner product space ***Physics and engineering: ****The [[Fourier number]] (<math>\mathit{Fo}</math>) (also known as the Fourier modulus), a ratio <math>\alpha t/d^2</math> of the rate of heat conduction <math>\alpha t</math> to the rate of thermal energy storage <math>d^2</math> ****[[Fourier transform spectroscopy]], a measurement technique whereby spectra are collected based on measurements of the temporal coherence of a radiative source, using time-domain measurements of the electromagnetic radiation or other type of radiation, including several methods such as the continuous wave Michelson or Fourier transform spectrometer and the pulsed Fourier transform spectrograph *[[Peter Fourier]] (1565–1640), a French saint in the Roman Catholic Church and priest of Mattaincourt {{disambig}} [[Category:Fourier analysis]] [[ca:Fourier]] [[cs:Fourier]] [[de:Fourier]] [[es:Fourier]] [[fr:Fourier]] [[it:Fourier]] [[he:פורייה]] [[nl:Fourier]] [[ja:フーリエ]] [[no:Fourier]] [[pl:Fourier]] [[pt:Fourier]] [[ro:Fourier (dezambiguizare)]] [[ru:Фурье]] [[sk:Fourier]] [[fi:Fourier]] [[zh:傅里叶]]