Results 61 to 70 of about 146 (115)

Ultradifferentiable functions via the Laguerre operator

open access: yesRevista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas
We define and characterize ultradifferentiable functions and their corresponding ultradistributions on $\RR^d_+$ using iterates of the Laguerre operator. The characterization is based on decay or growth conditions of the coefficients in their Laguerre series expansion.
Smiljana Jakšić   +3 more
openaire   +3 more sources

Characterization of ultradifferentiable test functions defined by weight matrices in terms of their Fourier Transform [PDF]

open access: yes, 2016
We prove that functions with compact support in non-quasianalytic classes $\mathcal{E}_{\{\mathcal{M}\}}$ of Roumieu-type and $\mathcal{E}_{(\mathcal{M})}$ of Beurling-type defined by a weight matrix $\mathcal{M}$ with some mild regularity conditions ...
Schindl, G.
core   +2 more sources

On the regularization of sequences and associated weight functions [PDF]

open access: yes
We revisit and generalize the geometric procedure of regularizing a sequence of real numbers with respect to a so-called regularizing function. This approach was studied by S.
Schindl, Gerhard
core   +2 more sources

Ultradifferentiable functions on smooth plane curves

open access: yesJournal of Mathematical Analysis and Applications, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Eigenfunction expansions of ultradifferentiable functions and ultradistributions

open access: yesTransactions of the American Mathematical Society, 2016
In this paper we give a global characterisation of classes of ultradifferentiable functions and corresponding ultradistributions on a compact manifold X X
Dasgupta, Aparajita, Ruzhansky, Michael
openaire   +3 more sources

On Boman's theorem on partial regularity of mappings [PDF]

open access: yes, 2011
summary:Let $\Lambda \subset \mathbb{R}^{n}\times \mathbb{R}^{m}$ and $k$ be a positive integer. Let $f:\mathbb{R}^{n}\rightarrow \mathbb{R}^{m}$ be a locally bounded map such that for each $(\xi ,\eta )\in \Lambda $, the derivatives $D_{\xi }^{j}f(x):= \
Tejinder S. Neelon, Neelon, Tejinder S.
core   +1 more source

Optimal Flat Functions in Carleman-Roumieu Ultraholomorphic Classes in Sectors. [PDF]

open access: yesResults Math, 2023
Jiménez-Garrido J   +3 more
europepmc   +1 more source

Sheafs of ultradifferentiable functions

open access: yes
An abstract theory of ultradifferentiable sheafs is developed. Moreover, various applications to the theory of linear partial differential equations, differential geometry and, in particular, CR geometry are discussed.
openaire   +2 more sources

Nuclear global spaces of ultradifferentiable functions in the matrix weighted setting. [PDF]

open access: yesBanach J Math Anal, 2021
Boiti C, Jornet D, Oliaro A, Schindl G.
europepmc   +1 more source

On Kernels of Convolution Operators in the Roumieu Spaces of Ultradifferentiable Functions

open access: yesВладикавказский математический журнал
В работе исследуются операторы свертки в пространствах Румье ультрадифференцируемых функций нормального типа на числовой прямой. К данному классу пространств относятся известные классы Жевре. В качестве частных случаев операторы свертки включают в себя дифференциальные операторы бесконечного порядка с постоянными коэффициентами, дифференциально ...
openaire   +2 more sources

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