Results 11 to 20 of about 250 (142)

Asymptotic Fourier and Laplace transforms for vector-valued hyperfunctions [PDF]

open access: yes, 2022
We study Fourier and Laplace transforms for Fourier hyperfunctions with values in a complex locally convex Hausdorff space. Since any hyperfunction with values in a wide class of locally convex Hausdorff spaces can be extended to a Fourier hyperfunction,
Kruse, Karsten
core  

Hyperfunction Fundamental Solutions of Surjective Convolution Operators on Real Analytic Functions [PDF]

open access: yes, 1995
Let μ ∈ A(R)′. The surjectivity of the convolution operator Tμ ≔ μ∗ on real analytic functions is characterized by two equivalent conditions: (1) Tμ admits hyperfunctional elementary solutions E+ (and E−), which are analytic on an angular neighbourhood ...
Langenbruch, M.
core   +1 more source

Digital signal processing techniques for application in the analysis of pathological voice and normophonic singing voice [PDF]

open access: yes, 2008
Singing voice is one specific example of vocal sound made by human beings. If we consider the larynx apparatus as a type of singing instrument then we can further say that sung voice is perhaps the best and most stable utilisation of such an instrument ...
Murphy, Katharine
core   +1 more source

O nekim klasama multiplikatora i semigrupana prostorima ultradistribucija i hiperfunkcija [PDF]

open access: yes, 2014
We are study the spaces of convolutors and multipliers in the spaces of tempered ultradistributions. There given theorems which gives us the characteri-zation of all the elements which belongs to spaces of convolutors and multipliers.
Velinov, Daniel
core   +3 more sources

Fourier hyperfunctions of general type

open access: yesKyoto Journal of Mathematics, 1988
The author studies vector valued Fourier hyperfunctions valued in a complex Hilbert space \(H\) which is not necessarily separable. This is a direct generalization of the author and \textit{Sh. Nagamachi} [Proc. Japan Acad. 51, 558-561 (1975; Zbl 0333.46031) and J. Math., Tokushima Univ. 9, 1-33 (1975; Zbl 0315.46039)]. He realizes \(H\)-valued Fourier
openaire   +4 more sources

Modulation Spectra Morphological Parameters: A New Method to Assess Voice Pathologies according to the GRBAS Scale

open access: yesBioMed Research International, Volume 2015, Issue 1, 2015., 2015
Disordered voices are frequently assessed by speech pathologists using perceptual evaluations. This might lead to problems caused by the subjective nature of the process and due to the influence of external factors which compromise the quality of the assessment. In order to increase the reliability of the evaluations, the design of automatic evaluation
Laureano Moro-Velázquez   +4 more
wiley   +1 more source

Ulam Problem for the Cosine Addition Formula in Sato Hyperfunctions

open access: yesJournal of Function Spaces, Volume 2015, Issue 1, 2015., 2015
We prove the Ulam problem for the cosine addition formula in the spaces of Schwartz distributions and Sato hyperfunctions with respect to bounded distributions and bounded hyperfunctions.
Jaeyoung Chung   +2 more
wiley   +1 more source

CONVOLUTORS FOR THE SPACE OF FOURIER HYPERFUNCTIONS

open access: yesJournal of the Korean Mathematical Society, 2005
The author of this paper defines the convolution of Fourier hyperfunctions and analyses its properties making use of the method given in the book [\textit{S. G. Gindikin} and \textit{L. R. Volevich}, ``Distributions and Convolution Equations'' (Gordon and Breach Sci. Publ.) (1992; Zbl 0760.46029)].
openaire   +3 more sources

Convergence in the space of Fourier hyperfunctions

open access: yesProceedings of the Japan Academy, Series A, Mathematical Sciences, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pilipović, Stevan, Stanković, Bogoljub
openaire   +3 more sources

Perturbation Theory for Abstract Volterra Equations

open access: yesAbstract and Applied Analysis, Volume 2013, Issue 1, 2013., 2013
We consider additive perturbation theorems for subgenerators of (a, k)‐regularized C‐resolvent families. A major part of our research is devoted to the study of perturbation properties of abstract time‐fractional equations, primarily from their importance in modeling of various physical phenomena. We illustrate the results with several examples.
Marko Kostić, Irena Lasiecka
wiley   +1 more source

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