Results 31 to 40 of about 4,596,905 (360)

On the partial sums of Walsh-Fourier series [PDF]

open access: yes, 2017
In this paper we investigate some convergence and divergence of some specific subsequences of partial sums with respect to Walsh system on the martingale Hardy spaces.
G. Tephnadze
semanticscholar   +1 more source

Vector valued formal Fourier-Jacobi series [PDF]

open access: yes, 2014
H. Aoki showed that any symmetric formal Fourier-Jacobi series for the symplectic group Sp_2(Z) is the Fourier-Jacobi expansion of a holomorphic Siegel modular form.
Bruinier, Jan Hendrik
core   +1 more source

MULTIPLE FOURIER SERIES AND FOURIER INTEGRALS WITH NON-SEPARABLE VARIABLES

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. Integral transforms for functions of several variables are an actively developing area of mathematical analysis. Numerous applications in integral transforms method for solving equations of mathematical physics, in signal processing of ...
O. E. Yaremko   +2 more
doaj   +1 more source

Pythagorean harmonic summability of Fourier series

open access: yesDemonstratio Mathematica, 2021
This paper explores the possibility for summing Fourier series nonlinearly via the Pythagorean harmonic mean. It reports on new results for this summability with the introduction of new concepts like the smoothing operator and semi-harmonic summation ...
Haidar Nassar H. S.
doaj   +1 more source

Rapidly Converging Series for ζ(2n+1) from Fourier Series

open access: yesAbstract and Applied Analysis, 2014
Ever since Euler first evaluated ζ(2) and ζ(2m), numerous interesting solutions of the problem of evaluating the ζ(2m)  (m∈ℕ) have appeared in the mathematical literature.
Junesang Choi
doaj   +1 more source

Generalization of the Hardy-Littlewood theorem on Fourier series

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
In the theory of one-dimensional trigonometric series, the Hardy-Littlewood theorem on Fourier series with monotone Fourier coefficients is of great importance.
S. Bitimkhan
doaj   +1 more source

Timoshenko beam and plate non-stationary vibrations [PDF]

open access: yesINCAS Bulletin, 2021
The problems of Timoshenko beams and plates lateral vibrations under the influence of unsteady loads are considered. Both beam and plate is supposed to be unlimited. In case of the plate the problem has been simply studied.
Grigory V. FEDOTENKOV   +4 more
doaj   +1 more source

INFFTM: Fast evaluation of 3d Fourier series in MATLAB with an application to quantum vortex reconnections [PDF]

open access: yes, 2016
Although Fourier series approximation is ubiquitous in computational physics owing to the Fast Fourier Transform (FFT) algorithm, efficient techniques for the fast evaluation of a three-dimensional truncated Fourier series at a set of \emph{arbitrary ...
Caliari, Marco, Zuccher, Simone
core   +2 more sources

Local properties of Fourier series

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
A theorem on local property of |N¯,pn|k summability of factored Fourier series, which generalizes some known results, and also a general theorem concerning the |N¯,pn|k summability factors of Fourier series have been proved.
Hüseyin Bor
doaj   +1 more source

The Wasserstein-Fourier Distance for Stationary Time Series [PDF]

open access: yesIEEE Transactions on Signal Processing, 2019
We propose the Wasserstein-Fourier (WF) distance to measure the (dis)similarity between time series by quantifying the displacement of their energy across frequencies.
Elsa Cazelles   +2 more
semanticscholar   +1 more source

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