Results 21 to 30 of about 242,721 (361)

BCR algorithm and the $T(b)$ theorem [PDF]

open access: yes, 2007
We show using the Beylkin-Coifman-Rokhlin algorithm in the Haar basis that any singular integral operator can be written as the sum of a bounded operator on $L^p ...
Auscher, Pascal, Yang, Qi Xiang
core   +3 more sources

Gauge-Invariant Operators for Singular Knots in Chern-Simons Gauge Theory [PDF]

open access: yes, 1997
We construct gauge invariant operators for singular knots in the context of Chern-Simons gauge theory. These new operators provide polynomial invariants and Vassiliev invariants for singular knots.
Akutsu   +57 more
core   +2 more sources

Localization of singular integral operators

open access: yesMathematische Zeitschrift, 1979
This work is a continuation of the paper [1]. Recently, in an attempt to give further meaning to several local theories for one dimensional singular integral operators, the authors defined a general concept of local factorization of matrix functions on a contour F in the complex plane.
Clancey, Kevin, Gohberg, Israel
openaire   +2 more sources

Boundedness for a Class of Singular Integral Operators on Both Classical and Product Hardy Spaces

open access: yesAbstract and Applied Analysis, 2014
We found that the classical Calderón-Zygmund singular integral operators are bounded on both the classical Hardy spaces and the product Hardy spaces. The purpose of this paper is to extend this result to a more general class. More precisely, we introduce
Chaoqiang Tan
doaj   +1 more source

Fourier integrals operators on lie groupoids [PDF]

open access: yes, 2016
As announced in [12], we develop a calculus of Fourier integral G-operators on any Lie groupoid G. For that purpose, we study convolability and invertibility of Lagrangian conic submanifolds of the symplectic groupoid T * G.
Lescure, Jean-Marie, Vassout, Stéphane
core   +3 more sources

Characterization of compactness of commutators of bilinear singular integral operators [PDF]

open access: yesProceedings of the American Mathematical Society, 2017
The commutators of bilinear Calder\'on-Zygmund operators and point-wise multiplication with a symbol in $cmo$ are bilinear compact operators on product of Lebesgue spaces. This work shows that, for certain non-degenerate Calder\'on-Zygmund operators, the
Lucas Chaffee   +4 more
semanticscholar   +1 more source

On ergodic singular integral operators [PDF]

open access: yesColloquium Mathematicum, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
A. Alphonse, Shobha Madan
openaire   +2 more sources

On the Theory of Multilinear Singular Operators with Rough Kernels on the Weighted Morrey Spaces

open access: yesJournal of Function Spaces, 2016
We study some multilinear operators with rough kernels. For the multilinear fractional integral operators TΩ,αA and the multilinear fractional maximal integral operators MΩ,αA, we obtain their boundedness on weighted Morrey spaces with two weights Lp,κ(u,
Sha He, Xiangxing Tao
doaj   +1 more source

Boundedness of Toeplitz type operators associated to Riesz potential operator with general kernel on Orlicz space

open access: yesOpen Mathematics, 2015
In this paper, the boundedness properties for some Toeplitz type operators associated to the Riesz potential and general integral operators from Lebesgue spaces to Orlicz spaces are proved.
Chen Dazhao
doaj   +1 more source

Three Observations on Commutators of Singular Integral Operators with BMO Functions [PDF]

open access: yes, 2016
Three observations on commutators of Singular Integral Operators with BMO functions are exposed, namely 1. The already known subgaussian local decay for the commutator, namely $$\displaystyle{ \frac{1} {\vert Q\vert }\left \vert \left \{x \in Q\,
C. P'erez, Israel P. Rivera-R'ios
semanticscholar   +1 more source

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