Results 31 to 40 of about 4,596,905 (360)
On the partial sums of Walsh-Fourier series [PDF]
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]
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
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
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
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
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]
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]
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
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]
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