Results 61 to 70 of about 276 (127)

Polynomials on the space of ω-ultradifferentiable functions [PDF]

open access: yes, 2007
The space of polynomials on the space Dω of ω-ultradifferentiable functions is represented as the direct sum of completions of symmetric tensor powers of D′ω
Grasela, K.
core  

On invertibility of Duhamel operator in spaces of ultradifferentiable functions

open access: yesUfa Mathematical Journal, 2023
Summary: Let \(\Delta\) be a non-point segment or an (open) interval on the real line containing the point 0. In the space of entire functions realized by the Fourier-Laplace transform of the dual space to the space of ultradifferentiable or of all infinitely differentiable functions on \(\Delta \), we study the operators from the commutator subgroup ...
Olga Aleksandrovna Ivanova   +1 more
openaire   +1 more source

The Gabor wave front set in spaces of ultradifferentiable functions [PDF]

open access: yes, 2019
[EN] We consider the spaces of ultradifferentiable functions S as introduced by Bjorck (and its dual S) and we use time-frequency analysis to define a suitable wave front set in this setting and obtain several applications: global regularity properties ...
Jornet Casanova, David   +4 more
core   +1 more source

Global pseudodifferential operators of infinite order in classes of ultradifferentiable functions [PDF]

open access: yes, 2019
[EN] We develop a theory of pseudodifferential operators of infinite order for the global classes S. of ultradifferentiable functions in the sense of Bjorck, following the previous ideas given by Prangoski for ultradifferentiable classes in the sense of ...
Jornet Casanova, David   +1 more
core   +1 more source

Whitney’s extension theorem for ultradifferentiable functions of Beurling type

open access: yesArkiv för Matematik, 1988
The authors introduce classes of non-quasianalytic functions \({\mathcal E}_{\omega}({\mathbb{R}}^ n)\) similar to those treated by Beurling and Björck: Given a weight function \(\omega\) : \({\mathbb{R}}\to [0,\infty [\) (i.e. \(\omega\) is continuous, even, increasing on [0,\(\infty [\), satisfies \(\omega (0)=0\), lim \(\omega\) (t)\(=\infty ...
Meise, Reinhold, Taylor, B. Alan
openaire   +3 more sources

Dense-lineability in classes of ultradifferentiable functions [PDF]

open access: yes, 2015
The Denjoy-Carleman classes are spaces of smooth functions which satisfy growth conditions on their derivatives defined through weight sequences.
Esser, Céline
core  

Global pseudodifferential operators in spaces of ultradifferentiable functions [PDF]

open access: yes, 2021
[ES] En esta tesis estudiamos operadores pseudodiferenciales, que son operadores integrales de la forma f 7→ ∫ Rd (∫ Rd ei(x−y)·ξa(x,y,ξ)f(y)dy)dξ, en las clases globales de funciones ultradiferenciables de tipo Beurling Sω(Rd) introducidas por Björck, cuando la función peso ω viene dada en el sentido de Braun, Meise y Taylor.
openaire   +2 more sources

The Kotake-Narasimhan Theorem in general ultradifferentiable classes [PDF]

open access: yes, 2023
We prove a Kotake-Narasimhan type theorem in general ultradifferentiable classes given by weight matrices. In doing so we simultaneously recover and partially generalize the known results for classes given by weight sequences and weight functions.
Fürdös, Stefan
core  

On weighted inductive limits of spaces of ultradifferentiable functions and their duals [PDF]

open access: yes, 2019
In the first part of this paper we discuss the completeness of two general classes of weighted inductive limits of spaces of ultradifferentiable functions.
Vindas Diaz, Jasson, Debrouwere, Andreas
core   +1 more source

Results of genericity concerning ultradifferentiable classes [PDF]

open access: yes, 2018
The aim of this talk is to give several results concerning the ''size'' (from different points of view) of sets defined using ultradifferentiable classes.
Esser, Céline
core  

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