Low-Dimensional maximal restriction principles for the Fourier transform
نویسندگان
چکیده
Following the ideas from a paper by same author, we prove abstract maximal restriction results for Fourier transform. Our deal mainly with operators of convolution-type and $r-$average functions. As by-product our techniques obtain spherical estimates, as well estimates $2-$average functions, answering thus points left open V. Kovac Muller, Ricci Wright.
منابع مشابه
Multi-dimensional Graph Fourier Transform
Many signals on Cartesian product graphs appear in the real world, such as digital images, sensor observation time series, and movie ratings on Netflix. These signals are “multidimensional” and have directional characteristics along each factor graph. However, the existing graph Fourier transform does not distinguish these directions, and assigns 1-D spectra to signals on product graphs. Furthe...
متن کاملGENERALIZATION OF TITCHMARSH'S THEOREM FOR THE GENERALIZED FOURIER-BESSEL TRANSFORM
In this paper, using a generalized translation operator, we prove theestimates for the generalized Fourier-Bessel transform in the space L2 on certainclasses of functions.
متن کاملOn the Restriction of the Fourier Transform to Polynomial Curves
We prove a Fourier restriction theorem on curves parametrised by the mapping t 7→ P (t) = (P1(t), . . . , Pn(t)), where each of the P1, . . . , Pn is a real-valued polynomial and t belongs to an interval on which each of the P1, . . . , Pn “resembles” a monomial.
متن کاملOptimal Padding for the Two-Dimensional Fast Fourier Transform
One-dimensional Fast Fourier Transform (FFT) operations work fastest on grids whose size is divisible by a power of two. Because of this, padding grids (that are not already sized to a power of two) so that their size is the next highest power of two can speed up operations. While this works well for one-dimensional grids, it does not work well for two-dimensional grids. For a two-dimensional g...
متن کاملThree-dimensional optical Fourier transform and correlation.
Optical implementation of a three-dimensional (3-D) Fourier transform is proposed and demonstrated. A spatial 3-D object, as seen from the paraxial zone, is transformed to the 3-D spatial frequency space. Based on the new procedure, a 3-D joint transform correlator is described that is capable of recognizing targets in the 3-D space.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Indiana University Mathematics Journal
سال: 2022
ISSN: ['1943-5258', '0022-2518', '1943-5266']
DOI: https://doi.org/10.1512/iumj.2022.71.8800