Kórus, Péter; Krasniqi, Xhevat Z.; Szal, Bogdan Uniform convergence of sine integral-series. (English) Zbl 1498.40002 Quaest. Math. 45, No. 5, 711-722 (2022). Reviewer: İsmail Aslan (Ankara) MSC: 40A10 42B10 42A38 PDFBibTeX XMLCite \textit{P. Kórus} et al., Quaest. Math. 45, No. 5, 711--722 (2022; Zbl 1498.40002) Full Text: DOI
Kubiak, Mateusz; Szal, Bogdan A necessary condition for uniform convergence of double sine series with \(p\)-bounded variation coefficients. (English) Zbl 1495.42002 Colloq. Math. 166, No. 2, 291-312 (2021). Reviewer: Hare Krishna Nigam (Gaya) MSC: 42A20 42A32 40A05 40B05 PDFBibTeX XMLCite \textit{M. Kubiak} and \textit{B. Szal}, Colloq. Math. 166, No. 2, 291--312 (2021; Zbl 1495.42002) Full Text: DOI
Krasniqi, Xh. Z.; Szal, B. On the integrability with weight of trigonometric series. (English) Zbl 1451.42009 J. Contemp. Math. Anal., Armen. Acad. Sci. 55, No. 3, 179-188 (2020) and Izv. Nats. Akad. Nauk Armen., Mat. 55, No. 3, 57-67 (2020). MSC: 42A32 46E30 PDFBibTeX XMLCite \textit{Xh. Z. Krasniqi} and \textit{B. Szal}, J. Contemp. Math. Anal., Armen. Acad. Sci. 55, No. 3, 179--188 (2020; Zbl 1451.42009) Full Text: DOI
Kubiak, Mateusz; Szal, Bogdan Uniform convergence of trigonometric series with \(p\)-bounded variation coefficients. (English) Zbl 1453.42004 Bull. Belg. Math. Soc. - Simon Stevin 27, No. 1, 89-110 (2020). Reviewer: Elijah Liflyand (Ramat-Gan) MSC: 42A20 40A30 42A10 26A48 PDFBibTeX XMLCite \textit{M. Kubiak} and \textit{B. Szal}, Bull. Belg. Math. Soc. - Simon Stevin 27, No. 1, 89--110 (2020; Zbl 1453.42004) Full Text: DOI Euclid
Szal, Bogdan; Kubiak, Maciej On weighted integrability of functions defined by trigonometric series with \(p\)-bounded variation coefficients. (English) Zbl 1499.42021 J. Inequal. Appl. 2019, Paper No. 275, 18 p. (2019). MSC: 42A16 42A20 42A32 41A50 42A10 PDFBibTeX XMLCite \textit{B. Szal} and \textit{M. Kubiak}, J. Inequal. Appl. 2019, Paper No. 275, 18 p. (2019; Zbl 1499.42021) Full Text: DOI
Duzinkiewicz, Krzysztof; Szal, Bogdan On weighted integrability of double sine series. (English) Zbl 1440.42011 J. Math. Anal. Appl. 472, No. 2, 1581-1603 (2019). MSC: 42A20 42A05 42A32 40A05 42B05 PDFBibTeX XMLCite \textit{K. Duzinkiewicz} and \textit{B. Szal}, J. Math. Anal. Appl. 472, No. 2, 1581--1603 (2019; Zbl 1440.42011) Full Text: DOI
Łenski, Włodzimierz; Szal, Bogdan On estimates of deviation of functions from matrix operators of their Fourier series by some expressions with \(r\)-differences of the entries. (English) Zbl 1470.42007 Abstr. Appl. Anal. 2016, Article ID 9712878, 10 p. (2016). MSC: 42A10 42A20 30E10 41A25 PDFBibTeX XMLCite \textit{W. Łenski} and \textit{B. Szal}, Abstr. Appl. Anal. 2016, Article ID 9712878, 10 p. (2016; Zbl 1470.42007) Full Text: DOI arXiv
Kranz, Radosława; Łenski, Włodzimierz; Szal, Bogdan Approximation of functions from \(L^p(\omega)_\beta\) by matrix means of their Fourier series. (English) Zbl 1261.42003 Indian J. Pure Appl. Math. 43, No. 5, 475-494 (2012). MSC: 42A10 PDFBibTeX XMLCite \textit{R. Kranz} et al., Indian J. Pure Appl. Math. 43, No. 5, 475--494 (2012; Zbl 1261.42003) Full Text: DOI arXiv
Szal, B. On the integral modulus of continuity of Fourier series. (English) Zbl 1274.42007 Acta Math. Hung. 131, No. 1-2, 138-159 (2011). MSC: 42A20 42A32 PDFBibTeX XMLCite \textit{B. Szal}, Acta Math. Hung. 131, No. 1--2, 138--159 (2011; Zbl 1274.42007) Full Text: DOI
Szal, Bogdan On weighted \(L^p\) integrability of functions defined by trigonometric series. (English) Zbl 1211.42004 J. Inequal. Appl. 2010, Article ID 485705, 19 p. (2010). Reviewer: László Losonczi (Debrecen) MSC: 42A16 42A20 PDFBibTeX XMLCite \textit{B. Szal}, J. Inequal. Appl. 2010, Article ID 485705, 19 p. (2010; Zbl 1211.42004) Full Text: DOI EuDML