Results 1 to 10 of about 44,469 (166)

Estimating the Gerber-Shiu Function in Lévy Insurance Risk Model by Fourier-Cosine Series Expansion

open access: yesMathematics, 2021
In this paper, we propose an estimator for the Gerber–Shiu function in a pure-jump Lévy risk model when the surplus process is observed at a high frequency.
Wen Su, Yunyun Wang
doaj   +3 more sources

The use of the surface location approach in the modeling of periodically nonhomogeneous slender visco-elastic beams [PDF]

open access: yesActa Scientiarum Polonorum. Architectura, 2021
The aim of the study is to develop an analytical reformulation the known theory for thin periodically nonhomogeneous viscoelastic beams, which should to form the basis for the planned research of the full beam dispersion relation.
Dorota Kula
doaj   +1 more source

Green's function of a pulse sound source in a uniform subsonic flow [PDF]

open access: yesРадиофизика и электроника, 2020
Subject and Purpose. The wave field produced by a spatial-temporal distribution of sound sources in a uniform subsonic flow is theoretically studied in an effort to obtain an analytical dependence of the sound field on physical parameters.
A.S. Bryukhovetski, A.V. Vichkan’
doaj   +1 more source

Homeomorphisms and Fourier Expansion

open access: yesReal Analysis Exchange, 2023
An extended abstract of a talk given by A. Olevskii in the 44th Summer Symposium in Real Analysis, Paris, 2022.
Kozma, Gady, Olevskiĭ, Alexander M.
openaire   +2 more sources

The Fourier type expansions on tubes [PDF]

open access: yesComplex Variables and Elliptic Equations, 2020
In view of recent developments of the study of reproducing kernel Hilbert spaces, in particular with the context the Hardy spaces on tubes, aspects of rational approximation for functions of finite energy in several complex and several real variables are developed.
Mai, Weixiong, Qian, Tao
openaire   +2 more sources

Near-wall Taylor-series expansion solution for compressible Navier–Stokes–Fourier system

open access: yesAIP Advances, 2022
This paper presents the Taylor-series expansion solution of near-wall velocity and temperature for a compressible Navier–Stokes–Fourier system with a no-slip curved boundary surface.
Tao Chen, Tianshu Liu
doaj   +1 more source

On the Fourier expansion of word maps [PDF]

open access: yesBulletin of the London Mathematical Society, 2013
Frobenius observed that the number of times an element of a finite group is obtained as a commutator is given by a specific combination of the irreducible characters of the group. More generally, for any word w the number of times an element is obtained by substitution in w is a class function.
O. Parzanchevski, G. Schul
openaire   +2 more sources

Fourier expansion and integral representation generalized Apostol-type Frobenius–Euler polynomials

open access: yesAdvances in Difference Equations, 2020
The main purpose of this paper is to investigate the Fourier series representation of the generalized Apostol-type Frobenius–Euler polynomials, and using the above-mentioned series we find its integral representation.
Alejandro Urieles   +3 more
doaj   +1 more source

New Sampling Expansion Related to Derivatives in Quaternion Fourier Transform Domain

open access: yesMathematics, 2022
The theory of quaternions has gained a firm ground in recent times and is being widely explored, with the field of signal and image processing being no exception.
Siddiqui Saima   +2 more
doaj   +1 more source

Conjugacy for Fourier–Bessel expansions [PDF]

open access: yesStudia Mathematica, 2006
We define and investigate the conjugate operator for Fourier-Bessel expansions. Weighted norm and weak type (1, 1) inequalities are proved for this operator by using a local version of the Calderón-Zygmund theory, with weights in most cases more general than Ap weights.
Ciaurri, Óscar, Stempak, Krzysztof
openaire   +3 more sources

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