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Wyszukujesz frazę "exponential" wg kryterium: Temat


Tytuł:
Generalized derivations and generalized exponential monomials on hypergroups
Autorzy:
Fechner, Żywilla
Gselmann, Eszter
Székelyhidi, László
Tematy:
moment function
moment sequence
exponential monomial
exponential polynomial
derivation
higher order derivation
hypergroup
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Data publikacji:
2023
Powiązania:
https://bibliotekanauki.pl/articles/29519377.pdf  Link otwiera się w nowym oknie
Źródło:
Opuscula Mathematica; 2023, 43, 4; 493-505
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Opis:
In one of our former papers Endomorphisms of the measure algebra of commutative hypergroups we considered exponential monomials on hypergroups and higher order derivations of the corresponding measure algebra. Continuing with this, we are now looking for the connection between the generalized exponential polynomials of a commutative hypergroup and the higher order derivations of the corresponding measure algebra.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generalized Levinsons inequality and exponential convexity
Autorzy:
Pecaric, J.
Praljak, M.
Witkowski, A.
Tematy:
Levinson's inequality
exponential convexity
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Data publikacji:
2015
Powiązania:
https://bibliotekanauki.pl/articles/255037.pdf  Link otwiera się w nowym oknie
Źródło:
Opuscula Mathematica; 2015, 35, 3; 397-410
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Opis:
We give a probabilistic version of Levinson's inequality under Mercer's assumption of equal variances for the family of 3-convex functions at a point. We also show that this is the largest family of continuous functions for which the inequality holds. New families of exponentially convex functions and related results are derived from the obtained inequality.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sums of Powers and Special Polynomials
Autorzy:
Boyadzhiev, Khristo N.
Tematy:
sum of powers
exponential polynomial
geometric polynomial
generating function
harmonic numbers
exponential integral function
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Data publikacji:
2020-12-01
Powiązania:
https://bibliotekanauki.pl/articles/55795509.pdf  Link otwiera się w nowym oknie
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2020, 40, 2; 275-283
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Opis:
In this paper, we discuss sums of powers 1p + 2p + ... + np and compute both the exponential and ordinary generating functions for these sums. We express these generating functions in terms of exponential and geometric polynomials and also show their connection to other interesting series. In particular, we show their connection to an interesting problem of Ovidiu Furdui.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forecasting the sales of console games for the Italian market
Autorzy:
Rossetti, Renato
Tematy:
exponential smoothing
SARIMA
forecast
videogames
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Data publikacji:
2019
Powiązania:
https://bibliotekanauki.pl/articles/425197.pdf  Link otwiera się w nowym oknie
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2019, 23, 3; 76-96
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Opis:
In videogames industry, time series analysis can be very useful in determining the general evolution and behaviour of the market dynamics. These methods are applicable to any time series forecasting problem, regardless of the application sector. This article discusses time series approaches to forecast the sales of console games for the Italian market. In particular two univariate techniques were evaluated, exponential smoothing and the SARIMA technique. The aim is to exploit the capabilities of these statistical methods in order to have a comparison of the results and to choose the most accurate model through an ex-post evaluation. Using monthly time-series data from November 2005 to September 2017, the selection of the most suitable model was indicated by the smallest value of the measures of accuracy (MAPE, sMAPE, RMSE) for the out-of-sample observations regarding the period October 2017-September 2018. The implementation of the models was done using Forecast PRO and Gretl. The time series involved is related to the sales regarding the first party manufacturers of consoles and handhelds (Microsoft, Sony and Nintendo).
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Predictive modeling and analysis of changes migrations in Poland
Autorzy:
Monika Nawrocka, Monika Nawrocka
Tematy:
dynamics migration
exponential smoothing
forecasting
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Data publikacji:
2017
Powiązania:
https://bibliotekanauki.pl/articles/1179772.pdf  Link otwiera się w nowym oknie
Źródło:
World Scientific News; 2017, 72; 467-481
2392-2192
Pojawia się w:
World Scientific News
Opis:
The development of the research in economy has shown that conducting mathematical modeling and statistics is an effective instrument for diagnosing the progress phenomenon of socio-economic. It provides the information about the dynamics of result changeability in different periods of time. Additionally statistical analysis allows determining the prediction for periods of future and past years. Migrations is characterized by the quality of being measurable because it includes quantitative data. In recent years, demonstrate high dynamics. Conducting the analyses and calculations based on methods and statistical instruments will result in the opportunity to compare, group, analysis variables, specify trends and designate the diagnoses of achieved sports results with the implementation of the optimum vector of variables of independent variable of migrations. An analysis of the dynamics migration variability was carried out on the basis of data from the website of the main statistical office, in this article. Used the statistical methods and the testing of interdependencies. Additionally, the models of time series have been used for the sake of the analysis. The most significant aim of the analysis of the dynamics is the designation of predictions. The use of the model of time series has the task of the specification of the change of the phenomenon level in time.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exponential stability results for variable delay difference equations
Autorzy:
Yankson, Ernest
Tematy:
exponential stability
Lyapunov functional
instability.
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Data publikacji:
2021
Powiązania:
https://bibliotekanauki.pl/articles/1397336.pdf  Link otwiera się w nowym oknie
Źródło:
Opuscula Mathematica; 2021, 41, 1; 145-155
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Opis:
Sufficient conditions that guarantee exponential decay to zero of the variable delay difference equation $x(n + 1) = a(n)x(n) + b(n)x(n − g(n))$ are obtained. These sufficient conditions are deduced via inequalities by employing Lyapunov functionals. In addition, a criterion for the instability of the zero solution is established. The results in the paper generalizes some results in the literature.
Dostawca treści:
Biblioteka Nauki
Artykuł

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