Zobrazeno 1 - 10
of 2 359
pro vyhledávání: '"Trigonometric polynomial"'
Autor:
Branko Malešević, Dimitrije Jovanović
Publikováno v:
Cubo, Vol 26, Iss 1, Pp 1-19 (2024)
In this paper we examine some inequalities of Frame's type on the interval \((0,\pi/2)\). By observing this domain we simply obtain the results using the appropriate families of stratified functions and MTP - Mixed Trigonometric Polynomials. Addition
Externí odkaz:
https://doaj.org/article/39117b3e14214963a05538997e168b39
Autor:
Г. Акишев, А.Х. Мырзагалиева
Publikováno v:
Қарағанды университетінің хабаршысы. Математика сериясы, Vol 114, Iss 2 (2024)
In the paper spaces of periodic functions of several variables were considered, namely the Lorentz space L2,τ(Tm), the class of functions with bounded mixed fractional derivative Wr2,τ, 1 ≤ τ < ∞, and the order of the best M-term approximation
Externí odkaz:
https://doaj.org/article/b38f10fb1a014af8a6ba50877b646a2e
Akademický článek
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Publikováno v:
Atmosphere, Vol 15, Iss 1, p 28 (2023)
Near-surface PM2.5 estimates remain a global scientific research challenge due to their effect on human fitness and atmospheric environmental quality. However, practical near-surface PM2.5 estimates are impeded by the incomplete monitoring data. In t
Externí odkaz:
https://doaj.org/article/c8dff25491bb4293bb619e0326af6c2f
Publikováno v:
Karpatsʹkì Matematičnì Publìkacìï, Vol 13, Iss 3, Pp 750-763 (2021)
In this paper we investigate the best approximation by trigonometric polynomials in the variable exponent weighted Morrey spaces ${\mathcal{M}}_{p(\cdot),\lambda(\cdot)}(I_{0},w)$, where $w$ is a weight function in the Muckenhoupt $A_{p(\cdot)}(I_{0}
Externí odkaz:
https://doaj.org/article/56b095fbc4374cd49f16b82e580af892
Autor:
G.I. Zelenov
Publikováno v:
Известия Иркутского государственного университета: Серия "Математика", Vol 37, Iss 1, Pp 77-92 (2021)
We prove new results about the inclusion of distributions of trigonometric polynomials in Gaussian random variables to Nikolskii--Besov classes. In addition, we estimate the total variance distances between distributions of trigonometric polynomials
Externí odkaz:
https://doaj.org/article/ac0507d3c223412abcbf26369821dd0e
Autor:
Zhang Zhihua
Publikováno v:
Open Mathematics, Vol 19, Iss 1, Pp 1047-1055 (2021)
Fourier approximation plays a key role in qualitative theory of deterministic and random differential equations. In this paper, we will develop a new approximation tool. For an mm-order differentiable function ff on [0,10,1], we will construct an mm-
Externí odkaz:
https://doaj.org/article/c093d6b3d1754b3999d514535459f019
Akademický článek
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