10 resultados para fractional Fourier-transform

em Bulgarian Digital Mathematics Library at IMI-BAS


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The fractional Fourier transform (FrFT) is used for the solution of the diffraction integral in optics. A scanning approach is proposed for finding the optimal FrFT order. In this way, the process of diffraction computing is speeded up. The basic algorithm and the intermediate results at each stage are demonstrated.

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We characterize the range of some spaces of functions by the Fourier transform associated with the spherical mean operator R and we give a new description of the Schwartz spaces. Next, we prove a Paley-Wiener and a Paley-Wiener-Schawrtz theorems.

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Mathematical Subject Classification 2010: 35R11, 42A38, 26A33, 33E12.

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MSC 2010: 35R11, 42A38, 26A33, 33E12

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Mathematics Subject Classification: Primary 33E20, 44A10; Secondary 33C10, 33C20, 44A20

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Dedicated to Professor A.M. Mathai on the occasion of his 75-th birthday. Mathematics Subject Classi¯cation 2010: 26A33, 44A10, 33C60, 35J10.

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2000 Mathematics Subject Classification: 42B10, 43A32.

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Mathematics Subject Class.: 33C10,33D60,26D15,33D05,33D15,33D90

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2000 Mathematics Subject Classification: 44A40, 42A38, 46F05

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AMS Subject Classification 2010: 11M26, 33C45, 42A38.