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A Note on the Spectrum of Composition Operators on Spaces of Real Analytic Functions [PDF]

open access: yesComplex Analysis and Operator Theory, 2016
In this paper the spectrum of composition operators on the space of real analytic functions is investigated. In some cases it is completely determined while in some other cases it is only estimated.
JOSÉ Bonet   +2 more
exaly   +8 more sources

Analytic Approximations of Uniformly Continuous Functions in Real Banach Spaces

open access: yesJournal of Mathematical Analysis and Applications, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Petr Hajek, Manuel Cepedello Boiso
exaly   +3 more sources

Real analytic approximation of Lipschitz functions on Hilbert space and other Banach spaces

open access: yesJournal of Functional Analysis, 2012
Updated version with a sharper result in the Hilbertian case. One thin tube is enough.
D Azagra, R Fry
exaly   +3 more sources

Inheritance of surjectivity for partial differential operators on spaces of real analytic functions

open access: yesJournal of Mathematical Analysis and Applications, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Michael Langenbruch
exaly   +3 more sources

Persistence and the Sheaf-Function Correspondence

open access: yesForum of Mathematics, Sigma, 2023
The sheaf-function correspondence identifies the group of constructible functions on a real analytic manifold M with the Grothendieck group of constructible sheaves on M.
Nicolas Berkouk
doaj   +1 more source

One result on boundedness of the Hilbert transform in Marcinkiewics spaces

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
In mathematics and in signal theory, the Hilbert transform is an important linear operator that takes a real-valued function and produces another real-valued function.
Nurken Tursynbayuly Bekbayev   +1 more
doaj   +1 more source

Approximation of the Hilbert transform in the Lebesgue spaces

open access: yesJournal of Numerical Analysis and Approximation Theory, 2023
The Hilbert transform plays an important role in the theory and practice of signal processing operations in continuous system theory because of its relevance to such problems as envelope detection and demodulation, as well as its use in relating the ...
Rashid Aliev, Lale Alizade
doaj   +1 more source

Boundary Values in Ultradistribution Spaces Related to Extended Gevrey Regularity

open access: yesMathematics, 2020
Following the well-known theory of Beurling and Roumieu ultradistributions, we investigate new spaces of ultradistributions as dual spaces of test functions which correspond to associated functions of logarithmic-type growth at infinity.
Stevan Pilipović   +2 more
doaj   +1 more source

Fréchet quotients of spaces of real-analytic functions [PDF]

open access: yesStudia Mathematica, 2003
The purpose of this article is to characterize the Fréchet spaces \(F\) which appear as a quotient of the space \(A(\Omega)\) of the complex valued real analytic functions defined on an open subset \(\Omega\) of \(\mathbb R^d\). The paper continues investigations of several authors about the structural theory of the space \(A(\Omega)\).
Domański, P., Frerick, L., Vogt, D.
openaire   +1 more source

The space of real-analytic functions has no basis [PDF]

open access: yesStudia Mathematica, 2000
Let \(\Omega\) be an open connected subset of the Euclidean space \(\mathbb{R}^d\). Let \(A(\Omega)\) be the space of real-analytic functions on \(\Omega\) with its usual topology. A quite interesting result is proved in this paper asserting that all metrizable complemented subspaces of \(A(\Omega)\) are finite-dimensional.
Domański, Paweł, Vogt, Dietmar
openaire   +2 more sources

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