Results 11 to 20 of about 752,843 (256)

Fourier's Series [PDF]

open access: yesNature, 1898
I SHOULD like to add a few words concerning the subject of Prof. Michelson's letter in NATURE of October 6. In the only reply which I have seen (NATURE, October 13), the point of view of Prof. Michelson is hardly considered.
exaly   +6 more sources

Use of Fourier Series in X-ray Diffraction (XRD) Analysis and Fourier-Transform Infrared Spectroscopy (FTIR) for Estimation of Crystallinity in Cellulose from Different Sources. [PDF]

open access: yesPolymers (Basel), 2022
Montoya-Escobar N   +11 more
europepmc   +2 more sources

Almost holomorphic Poincare series corresponding to products of harmonic Siegel-Maass forms [PDF]

open access: yes, 2016
We investigate Poincar\'e series, where we average products of terms of Fourier series of real-analytic Siegel modular forms. There are some (trivial) special cases for which the products of terms of Fourier series of elliptic modular forms and harmonic ...
Bringmann, K.   +2 more
core   +2 more sources

On A Subclass Of P- Valent Functions With Negative Coefficsients Defined By Integral Operator By Applying Fourier Series I

open access: yesJournal of Kufa for Mathematics and Computer, 2013
In this paper , we introduced a new subclass  which consists of analytic and valent functions with negative coefficients in the unit disk defined by integral operator .
Rafid Habib Buti
doaj   +1 more source

Wave fronts via Fourier series coefficients [PDF]

open access: yes, 2015
Motivated by the product of periodic distributions, we give a new description of the wave front and the Sobolev-type wave front of a distribution $f\in\mathscr{D}'(\mathbb{R}^d)$ in terms of Fourier series coefficients.Comment: 10 ...
Maksimovic, Snjezana   +3 more
core   +2 more sources

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

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

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

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