Results 11 to 20 of about 163,902 (301)

The Hilbert transform of a measure [PDF]

open access: yesJournal d'Analyse Mathématique, 2010
18 ...
Poltoratski, Alexei   +2 more
openaire   +7 more sources

The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators [PDF]

open access: yesAbstract and Applied Analysis, 2007
The concept of unbounded Fredholm operators on Hilbert C*-modules over an arbitrary C*-algebra is discussed and the Atkinson theorem is generalized for bounded and unbounded Feredholm operators on Hilbert C*-modules over C*-algebras of compact operators.
A. Niknam, K. Sharifi
doaj   +7 more sources

A sufficient condition for the boundedness of operator-weighted martingale transforms and Hilbert transform [PDF]

open access: bronze, 2007
Let W be an operator weight taking values almost everywhere in the bounded positive invertible linear operators on a separable Hilbert space H. We show that if W and its inverse W−1 both satisfy a matrix reverse Holder property introduced in [2], then ...
Sandra Pot
openalex   +4 more sources

The Hilbert transform [PDF]

open access: yesSurveys in Mathematics and its Applications, 2021
The Hilbert transform is essentially the only singular operator in one dimension. This undoubtedly make it one of the most important linear operator in harmonic analysis.
Edisson Arley Arcos   +1 more
doaj  

Free Hilbert transforms [PDF]

open access: yesDuke Mathematical Journal, 2017
Added two remarks (4.12, 4.13).
Mei, Tao, Ricard, Éric
openaire   +7 more sources

On the Hilbert Transform of Wavelets [PDF]

open access: yesIEEE Transactions on Signal Processing, 2011
Appears in IEEE Transactions on Signal Processing, vol. 59, no. 4, pp.
Kunal N. Chaudhury, Michael Unser
openaire   +3 more sources

Edge feature enhancement approach using hilbert transform of Cauchy distribution and its applications

open access: yesIET Image Processing, 2021
Building on past work showing that the Hilbert transform can be used for edge feature enhancement, a new edge feature enhancement method is developed using a two‐dimensional (2D) isotropic Hilbert transform of the Cauchy distribution.
Ke Wang, Gustavo K. Rohde, Jian Xiao
doaj   +1 more source

A characterization of the Hilbert transform [PDF]

open access: yesProceedings of the American Mathematical Society, 1998
Let \(H\) be the Hilbert transform on the real line, \[ Hf(x)= {1\over\pi} \text{p.v. }\int^\infty_{-\infty} f(x- y) {dy\over y}\quad\text{for }x\in\mathbb{R}. \] Let \(T\) be a bounded linear operator on \(L^2(\mathbb{R})\) satisfying: (i) \(T\) maps real valued functions into real valued functions, (ii) \(T\) commutes with translations, (iii) \(-T^2=
Arcozzi, N, FONTANA, LUIGI
openaire   +4 more sources

Hölder norm estimate for a Hilbert transform in Hermitian Clifford analysis [PDF]

open access: yes, 2012
A Hilbert transform for Holder continuous circulant (2 x 2) matrix functions, on the d-summable (or fractal) boundary I" of a Jordan domain Omega in a"e(2n) , has recently been introduced within the framework of Hermitean Clifford analysis. The main goal
Abreu Blaya, Ricardo   +4 more
core   +2 more sources

Time-Frequency Analysis of Noisy Vibration Signal Based on Improved Hilbert-Huang Transform

open access: yesShanghai Jiaotong Daxue xuebao, 2023
Aimed at the phenomenon of modal confusion and lack of practical significance of instantaneous frequency caused by Hilbert-Huang transform (HHT) noisy vibration signal time-frequency analysis, complete ensemble empirical mode decomposition with adaptive ...
SUN Miao, YANG Junkai, WU Li
doaj   +1 more source

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