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Found 8,560 Documents (Results 1–100)

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Optimal two-sided estimates on the interval \([\pi/2,\pi]\) of the sum of the sine series with convex coefficient sequence. (English. Russian original) Zbl 07581899

Math. Notes 112, No. 2, 328-331 (2022); translation from Mat. Zametki 112, No. 2, 317-320 (2022).
MSC:  42A24
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Polynomials in the differentiation operator and formulas for the sums of certain convergent series. (English. Russian original) Zbl 07566740

Funct. Anal. Appl. 56, No. 1, 61-71 (2022); translation from Funkts. Anal. Prilozh. 56, No. 1, 81-93 (2022).
MSC:  26-XX 33-XX 40-XX
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Global Borel summability of some partial differential equations. (English) Zbl 07533052

Filipuk, Galina (ed.) et al., Formal and analytic solutions of differential equations. Selected contributions based on the presentations at the conference, virtual, June 29 – July 3, 2020. Singapore: World Scientific. 223-233 (2022).
MSC:  35C10
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Double sequence spaces and four-dimensional matrices. (English) Zbl 07516550

Monographs and Research Notes in Mathematics. Boca Raton, FL: CRC Press (ISBN 978-1-032-25024-3/hbk; 978-1-032-25949-9/pbk; 978-1-003-28578-6/ebook). xviii, 233 p. (2022).
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Fourier analysis. With a new foreword by Terence Tao. Reprint of the 1989 paperback edition. (English) Zbl 07503892

Cambridge Mathematical Library. Cambridge: Cambridge University Press (ISBN 978-1-00-923005-6/pbk; 978-1-00-923006-3/ebook). xiv, 592 p. (2022).
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Unconditional bases in radial Hilbert spaces. (English. Russian original) Zbl 1496.46009

Izv. Math. 86, No. 1, 150-168 (2022); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 86, No. 1, 160-179 (2022).
MSC:  46B15 46E22 30D10
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Approximation of signals via different summability means with effects of Gibbs phenomenon. (English) Zbl 1486.40001

Singh, Jagdev (ed.) et al., Methods of mathematical modelling and computation for complex systems. Cham: Springer. Stud. Syst. Decis. Control 373, 413-433 (2022).
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