Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Igoris Belovas"'
Autor:
Igoris Belovas
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 64, Iss B (2023)
Numbers satisfying a class of triangular arrays, defined by a bivariate first-order linear difference equation with linear coefficients, include a wide range of combinatorial numbers: binomial coefficients, Morgan numbers, Stirling numbers of the fir
Externí odkaz:
https://doaj.org/article/affc3b3403cb47b8b8b537c06bb09e6d
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 64, Iss B (2023)
The twin primes conjecture states that there are infinitely many twin primes. While studying this hypothesis, many important results were obtained, but the problem remains unsolved. In this work, the problem is studied from the side of experimental m
Externí odkaz:
https://doaj.org/article/b01c37acc19d4c038a72f541031f396e
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 46, Iss spec. (2023)
The Baltic States equity market is a challenge for investors and financial analysts. Unfortunately strong assivity is observed in ``young'' markets, therefore any (Gaussian, α-stable etc) distribution fitting tests (Anderson–Darling, Kolmogorov–
Externí odkaz:
https://doaj.org/article/79ddcffb731c42508bdc37ec4e4df129
Autor:
Aivaras Bielskis, Igoris Belovas
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 63, Iss B (2022)
In the work, relevant methods of stock price forecasting are applied and compared: statistical time series (ARIMA, SARIMA) and neural network-based (LSTM). The results of stock price (Amazon, Apple, Google, Netflix, and Tesla companies) simulations a
Externí odkaz:
https://doaj.org/article/fc5342c3e3e64b66a511cee423f17f9a
Autor:
Igoris Belovas
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 63, Iss B (2022)
The article presents formulas for powers of repdigits in the different numeral systems. This task can be used as an exercise for computer science students to help them master the corresponding mathematical apparatus.
Externí odkaz:
https://doaj.org/article/e6c232ce1095480c8e658c8a55e4eac8
Publikováno v:
Vilnius University Open Series (2022)
In this paper, we continue the study of efficient algorithms for the computation of the Riemann zeta function on the complex plane. We introduce two precalculated arrays-based modifications of MB-method. We perform numerical experiments with these al
Externí odkaz:
https://doaj.org/article/91ba93c18e7e442e958cb1bce0fdad0f
Autor:
Igoris Belovas
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 62, Iss B (2021)
Floyd's triangle is often presented to computer science students as an exercise or example to illustrate the concepts of text formatting and loop constructs. The paper proposes to look at an object from a different angle and to examine limit theorems
Externí odkaz:
https://doaj.org/article/593cbbf3cf744a54b72997fd02444677
Publikováno v:
Fractal and Fractional, Vol 6, Iss 6, p 300 (2022)
The paper continues the study of efficient algorithms for the computation of zeta functions over the complex plane. We aim to apply the modifications of algorithms to the investigation of underlying fractal structures associated with the Riemann zeta
Externí odkaz:
https://doaj.org/article/e0c97c1be5144c028932fc668da15c74
Autor:
Igoris Belovas
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 61, Iss B (2021)
The paper extends the investigations of limit theorems for numbers satisfying a class of triangular arrays. We obtain analytical expressions for the semiexponential generating function the numbers, associated with Hermite polynomials. We apply the re
Externí odkaz:
https://doaj.org/article/1e731a6fb107402b9d42a2f8045256a9
Autor:
Igoris Belovas
Publikováno v:
Mathematics, Vol 10, Iss 6, p 865 (2022)
In this paper, we study limit theorems for numbers satisfying a class of triangular arrays, which are defined by a bivariate linear recurrence with bivariate linear coefficients. We obtain analytical expressions for the semi-exponential generating fu
Externí odkaz:
https://doaj.org/article/cab3d70b7b0b43dba9f616ef4e5daed9