Results 21 to 30 of about 4,708,954 (364)

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

Reactive loading function on tunnel excavation contour in rock mass [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2003
Investigation of the stress field around the cavity that is loaded or partially loaded at the inner surface by the rotationally symmetric loading is still the contemporary problem in the theory of elasticity.
Lukić Dragan, Anagnosti Petar
doaj   +1 more source

Lacunary Fourier series and a qualitative uncertainty principle for compact Lie groups [PDF]

open access: yes, 2010
We define lacunary Fourier series on a compact connected semisimple Lie group $G$. If $f \in L^1(G)$ has lacunary Fourier series, and vanishes on a non empty open set, then we prove that $f$ vanishes identically.
Narayanan, E K, Sitaram, A
core   +2 more sources

Fourier Series Approximation in Besov Spaces

open access: yesJournal of Mathematics, 2023
Defined on the top of classical Lp-spaces, the Besov spaces of periodic functions are good at encoding the smoothness properties of their elements.
Birendra Singh, Uaday Singh
doaj   +1 more source

On the order of summability of the Fourier inversion formula [PDF]

open access: yes, 2010
In this article we show that the order of the point value, in the sense of Łojasiewicz, of a tempered distribution and the order of summability of the pointwise Fourier inversion formula are closely related.
A. Denjoy   +44 more
core   +3 more sources

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

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

On the Nonconvergence of Fourier Series [PDF]

open access: yesProceedings of the American Mathematical Society, 1958
and (ii)' an K log n/n, for some K>0, then the series (1.1), at t=0, converges. Wang [2] has also framed examples showing that k in condition (i) of Theorem A cannot be replaced by any k'
openaire   +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

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

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