Results 31 to 40 of about 138,073 (227)

Multi-Horizon Forecasting of Global Horizontal Irradiance Using Online Gaussian Process Regression: A Kernel Study

open access: yesEnergies, 2020
In the present paper, global horizontal irradiance (GHI) is modelled and forecasted at time horizons ranging from 30 min to 48 h, thus covering intrahour, intraday and intraweek cases, using online Gaussian process regression (OGPR) and online sparse ...
Hanany Tolba   +5 more
doaj   +1 more source

Two Kinds Hybrid Power Mean Involving Two-Term Exponential Sums and Dedekind Sums

open access: yes, 2023
The main purpose of this article is using the analytic mathods and the quadratic residual transformation technique, and properties of Dedekind sums to study the calculating problem of two kinds hybrid power mean involving the two-term exponential sums and Dedekind sums, and give two asymptotic formulas for it. This work is a generalization for existing
Yu, Jinmin, Han, Xue, Wang, Tingting
openaire   +2 more sources

On the eighth power mean of the two-term exponential sums

open access: yesFinite Fields and Their Applications, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tingting Wang, Wenpeng Zhang
openaire   +1 more source

A certain two-term exponential sum and its fourth power means

open access: yesAIMS Mathematics, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang Jin, Zhang Wenpeng
openaire   +2 more sources

The Fourth Hybrid Power Mean Involving the Character Sums and Exponential Sums

open access: yesMathematics
In this paper, we consider the fourth hybrid power mean involving two-term exponential sums and third-order character sum modulo p, a topic of significant importance in analytic number theory.
Guohui Chen, Tingting Du
doaj   +1 more source

Retracted Article: On the fourth power mean of the two-term exponential sums [PDF]

open access: yesJournal of Inequalities and Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhu, Minhui, Han, Di
openaire   +2 more sources

The hybrid power mean of some special character sums of polynomials and two-term exponential sums modulo $ p $

open access: yesAIMS Mathematics, 2021
<abstract><p>We consider the calculation problem of one kind hybrid power mean involving the character sums of polynomials and two-term exponential sums modulo $ p $, an odd prime, and use the analytic method and the properties of classical Gauss sums to give some identities and asymptotic formulas for them.</p></abstract>
Wenpeng Zhang, Jiafan Zhang
openaire   +2 more sources

On matrix elements for the quantized cat map modulo prime powers

open access: yes, 2008
The quantum cat map is a model for a quantum system with underlying chaotic dynamics. In this paper we study the matrix elements of smooth observables in this model, when taking arithmetic symmetries into account. We give explicit formulas for the matrix
Kelmer, Dubi
core   +3 more sources

Retraction Note: On the fourth power mean of the two-term exponential sums [PDF]

open access: yesJournal of Inequalities and Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhu, Minhui, Han, Di
openaire   +2 more sources

The fourth power mean value of one kind two-term exponential sums

open access: yesAIMS Mathematics, 2022
<abstract><p>In this paper, based on the analytic method and the properties of Gauss sums, we study the computational problems of the fourth power mean value of one kind two-term exponential sums through the classification and estimation of Dirichlet characters and give it a calculation formula or asymptotic formula in different conditions.&
Jinmin Yu, Renjie Yuan, Tingting Wang
openaire   +2 more sources

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