[HTML][HTML] Multistage pseudo-spectral method (method of collocations) for the approximate solution of an ordinary differential equation of the first order

HA Weddeye - Discrete and continuous models and applied …, 2022 - cyberleninka.ru
The classical pseudospectral collocation method based on the expansion of the solution in a
basis of Chebyshev polynomials is considered. A new approach to constructing systems of …

Multistage collocation pseudo-spectral method for the solution of the first order linear ODE

LA Sevastianov, KP Lovetskiy… - 2022 VIII International …, 2022 - ieeexplore.ieee.org
The two-stage method for solving ODEs is based on the interpolation of the coefficients of
the derivative of the solution. Transforms with a spectral integration matrix gives a part of the …

Numerical Integration of Highly Oscillatory Functions with and without Stationary Points

KP Lovetskiy, LA Sevastianov, M Hnatič, DS Kulyabov - Mathematics, 2024 - mdpi.com
This paper proposes an original approach to calculating integrals of rapidly oscillating
functions, based on Levin's algorithm, which reduces the search for an anti-derivative …

High-order non-uniform grid scheme for numerical analysis of queueing system with a small parameter

SA Vasilyev, MA Bouatta, GO Tsareva - Proceedings of the Computational …, 2022 - Springer
Now many researchers are paying great attention to the study of large-scale queueing
systems (LSQS) with a lager number of servers because of the development of 5G/6G …

Improving the accuracy of exponentially converging quadratures

AA Belov, VS Khokhlachev - Computational Mathematics and …, 2024 - Springer
Abstract Evaluation of one-dimensional integrals arises in many problems in physics and
technology. This is most often done using simple quadratures of midpoints, trapezoids and …

Computational advantage in evaluating oscillatory integral using quadratic spline

MP Ramachandran… - International Journal of …, 2024 - inderscienceonline.com
The quadratic spline is used in the conventional Levin's method to evaluate the oscillatory
integral. Generally, the Levin method requires O (n 3) computations and can be unstable …

DISCRETE AND CONTINUOUS MODELS AND APPLIED COMPUTATIONAL SCIENCE

KP LOVETSKIY, DS KULYABOV… - … MODELS AND APPLIED …, 2022 - elibrary.ru
The classical pseudospectral collocation method based on the expansion of the solution in a
basis of Chebyshev polynomials is considered. A new approach to constructing systems of …