Numerical solution of first-order exact differential equations by the integrating factor method
- Авторлар: Sevastianov L.A.1,2, Lovetskiy K.P.1, Kulyabov D.S.1, Sergeev S.V.1
-
Мекемелер:
- Peoples’ Friendship University of Russia named after Patrice Lumumba
- Joint Institute for Nuclear Research
- Шығарылым: Том 24, № 4 (2024)
- Беттер: 512-525
- Бөлім: Mathematics
- URL: https://journals.rcsi.science/1816-9791/article/view/353450
- DOI: https://doi.org/10.18500/1816-9791-2024-24-4-512-525
- EDN: https://elibrary.ru/ILSNIX
- ID: 353450
Дәйексөз келтіру
Толық мәтін
Аннотация
A numerical algorithm for solving exact differential equations is proposed, based both on the efficient calculation of integrating factors and on a ''new'' numerical method for integrating functions. Robust determination of the integrating factors is implemented by using the Chebyshev interpolation of the desired functions and performing calculations on Gauss – Lobatto grids, which ensure the discrete orthogonality of the Chebyshev matrices. After that, the integration procedure is carried out using the Chebyshev integration matrices. The integrating factor and the final potential of the ODE solution are presented as interpolation polynomials depending on a limited number of numerically recoverable expansion coefficients.
Авторлар туралы
Leonid Sevastianov
Peoples’ Friendship University of Russia named after Patrice Lumumba; Joint Institute for Nuclear Research
Email: sevastianov-la@pfur.ru
ORCID iD: 0000-0002-1856-4643
SPIN-код: 6950-9879
6, Miklukho-Maklaya St., Moscow, 117198, Russia
Konstantin Lovetskiy
Peoples’ Friendship University of Russia named after Patrice Lumumba
Email: lovetskiy-kp@rudn.ru
ORCID iD: 0000-0002-3645-1060
SPIN-код: 6665-7150
Scopus Author ID: 18634692900
6, Miklukho-Maklaya St., Moscow, 117198, Russia
Dmitry Kulyabov
Peoples’ Friendship University of Russia named after Patrice Lumumba
Email: kulyabovds@rudn.ru
ORCID iD: 0000-0002-0877-7063
SPIN-код: 7219-1902
Scopus Author ID: 35194130800
ResearcherId: I-3183-2013
6, Miklukho-Maklaya St., Moscow, 117198, Russia
Stepan Sergeev
Peoples’ Friendship University of Russia named after Patrice Lumumba
Хат алмасуға жауапты Автор.
Email: 1032202195@rudn.ru
ORCID iD: 0009-0004-1159-4745
6, Miklukho-Maklaya St., Moscow, 117198, Russia
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