{ "id": "2102.07551", "version": "v1", "published": "2021-02-15T13:41:00.000Z", "updated": "2021-02-15T13:41:00.000Z", "title": "Optimal quadrature formulas for computing of Fourier integrals in a Hilbert space", "authors": [ "A. R. Hayotov", "S. S. Babaev" ], "comment": "arXiv admin note: substantial text overlap with arXiv:2001.02636", "journal": "Problems of Computational and Applied Mathematics, 2020", "categories": [ "math.NA", "cs.NA", "math.CV" ], "abstract": "In the present paper the optimal quadrature formulas in the sense of Sard are constructed for numerical integration of the integral $\\int_a^b e^{2\\pi i\\omega x}\\varphi(x)d x$ with $\\omega\\in \\mathbb{R}$ in the Hilbert space $W_2^{(2,1)}[a,b]$ of complex-valued functions. Furthermore, the explicit expressions for coefficients of the constructed optimal quadrature formulas are obtained. At the end of the paper some numerical results are presented.", "revisions": [ { "version": "v1", "updated": "2021-02-15T13:41:00.000Z" } ], "analyses": { "keywords": [ "hilbert space", "fourier integrals", "constructed optimal quadrature formulas", "explicit expressions", "complex-valued functions" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }