Results 101 to 110 of about 4,596,905 (360)
Generalized Absolute Riesz Summability of Infinite Series and Fourier Series
International Journal of Analysis and Applications, 2020 In this paper, two known theorems dealing with $|\bar{N},p_{n}|_{k}$ summability of infinite series and Fourier series have been generalized to ${\varphi}-|\bar{N},p_{n};\beta|_{k}$ summability.
Bağdagül Kartal
doaj
A method for parameter hypothesis testing in nonparametric regression with Fourier series approach. [PDF]
MethodsX, 2023 Ramli M, Budiantara IN, Ratnasari V.
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On Classes of Summable Functions and their Fourier Series
, 1912 1. Functions which are summable may be such that certain functions of them are themselves summable. When this is the case they will possess certain special properties additional to those which the mere summability involves.
W. H. Young
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On a Certain Series of Fourier [PDF]
Proceedings of the London Mathematical Society, 1913 n ...
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Advanced Functional Materials, EarlyView.A novel polymer electrolyte membrane with a hyperbranched interpenetrating hydrogen bond network structure is developed. The unique structure of the hyperbranched polymer contributes to a high glass transition temperature exceeding 400 °C, enabling its operation at elevated temperatures for fuel cell applications.
Lingping Zeng +10 more
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On the Nonconvergence of Fourier Series [PDF]
Proceedings 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'
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Interfacial Interaction‐Mediated Regulation of Metal Oxidation States for Enhanced CO2 Reduction
Advanced Functional Materials, EarlyView.A hybrid strategy is employed to optimize bismuth–oxygen interactions, precisely regulating interfacial bismuth–oxygen bonds during topochemical synthesis. This leads to vanadium oxynitride‐bismuth catalyst exhibiting high Faradaic efficiency and durability for formate production, attributed to enhanced reaction thermodynamics and kinetics.
Zhongyuan Ma +6 more
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Optimal with Respect to Accuracy Recovery of Some Classes Functions by Fourier Series
Кібернетика та комп'ютерні технологіїIntroduction. Function approximation (approximation or restoration) is widely used in data analysis, model building, and forecasting. The goal of function approximation is to find the function that best approximates the original function.
Olena Kolomys
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Synthesis of unequally-spaced arrays using the fractional Fourier series. [PDF]
Sci Rep, 2022 Boozari M, Khalaj-Amirhosseini M.
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Notes on Fourier analysis (XXV): On the $\vert C\vert $-summability of the Fourier Series [PDF]
, 1950 Noboru Matsuyama
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