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JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive

Izv. Vyssh. Uchebn. Zaved. Mat., 2024 Number 12, Pages 44–56 (Mi ivm10044)

On one algorithm for constructing the Fourier transform of the function ${{\overline{V }}_{m}}\left( x \right)$ to determine a discrete analog of one differential operator

Ik. I. Jalolov, O. I. Jalolov

Bukhara State University, 11 M. Ikbol str., Bukhara, 200118 Republic of Uzbekistan

Abstract: This paper considers the problem of constructing the Fourier transform of a harrow-shaped function to determine a discrete analog of the differential operator, which is used in constructing optimal quadrature formulas in L. Hörmander space. In addition, the problem of constructing a discrete analog of a specific operator in a particular case is considered.

Keywords: generalized function, Sobolev space, error functional, interpolation formula, extremal function.

UDC: 519.54

Received: 13.01.2024
Revised: 13.01.2024
Accepted: 20.03.2024

DOI: 10.26907/0021-3446-2024-12-44-56


 English version:
Russian Mathematics (Izvestiya VUZ. Matematika), 2024, 68:12, 45–56


© Steklov Math. Inst. of RAS, 2025