In recent years, the space \( {\left|{\overline{N}}_p^{\theta}\right|}_k \) has been generated from the set of k -absolutely convergent series ℓ k as the set of series summable by the absolute weighted method. We investigate some properties of this space, such as β -duality and the relationship with ℓ k and then show that each element in the classes \( \left(\left|{\overline{N}}_p\right|,{\left|{\overline{N}}_q^{\theta}\right|}_k\right) \) and \( \left({\left|{\overline{N}}_p^{\theta}\right|}_k,\left|{\overline{N}}_q\right|\right) \) of infinite matrices corresponds to a continuous linear operator and also characterizes these classes. Hence, in a special case, we deduce some well-known results of Sarıgöl, Bosanquet, Orhan, and Sunouchi.
Similar content being viewed by others
References
F. Başar, Summability Theory and Its Applications, Bentham Sci. Publ., Istanbul (2012).
G. Bennett, “Some elementary inequalities,” Quart. J. Math. Oxford, Ser. (2), 38, 401–425 (1987).
H. Bor and B. Thorpe, “On some absolute summability methods,” Analysis, 7, No. 2, 145–152 (1987).
L. S. Bosanquet, “Review on G. Sunouchi’s paper, Notes Fourier Anal., 18, absolute summability of a series with constant terms,” Math. Rev., 11, 654 (1950).
T. M. Flett, “On an extension of absolute summability and some theorems of Littlewood and Paley,” Proc. Lond. Math. Soc. (3), 7, 113–141 (1957).
B. Kuttner, “Some remarks on summability factors,” Indian J. Pure Appl. Math., 16, No. 9, 1017–1027 (1985).
I. J. Maddox, Elements of Functional Analysis, Cambridge Univ. Press, London; New York (1970).
S. M. Mazhar, “On the absolute summability factors of infinite series,” Tohoku Math. J. (2), 23, 433–451 (1971).
M. R. Mehdi, “Summability factors for generalized absolute summability. I,” Proc. Lond. Math. Soc. (3), 10, No. 3, 180–199 (1960).
L. McFadden, “Absolute Nörlund summability,” Duke Math. J., 9, 168–207 (1942).
R. N. Mohapatra and G. Das, “Summability factors of lower semi-matrix transformations,” Monatsh. Math., 79, 307–315 (1975).
C. Orhan and M. A. Sarıgöl, “On absolute weighted mean summability,” Rocky Mountain J. Math., 23, No. 3, 1091–1097 (1993).
M. A. Sarıgöl, “Necessary and sufficient conditions for the equivalence of the summability methods \( {\left|\overline{N},{p}_n\right|}_k \) and |C, 1| k ” Indian J. Pure Appl. Math., 22, No. 6, 483–489 (1991).
M. A. Sarıgöl, “Matrix transformations on the fields of absolute weighted mean summability,” Studia Sci. Math. Hungar., 48, No. 3, 331–341 (2011).
M. A. Sarıgöl and H. Bor, “Characterization of absolute summability factors,” J. Math. Anal. Appl., 195, 537–545 (1995).
M. A. Sarıgöl, “On local properties of factored Fourier series,” Appl. Math. Comput., 216, 3386–3390 (2010).
M. A. Sarıgöl, “Characterization of summability factors for Riesz methods,” J. Univ. Kuwait (Sci.), 21, 1–7 (1994).
M. A. Sarıgöl, “Extension of Mazhar’s theorem on summability factors,” J. Univ. Kuwait (Sci.), 42, No. 3, 28–35 (2015).
W. T. Sulaiman, “On summability factors of infinite series,” Proc. Amer. Math. Soc., 115, 313–317 (1992).
G. Sunouchi, “Notes on Fourier analysis, 18, absolute summability of a series with constant terms,” Tohoku Math. J., 1, 57–65 (1949).
M. Stieglitz and H. Tietz, “Matrixtransformationen von Folgenraumen eine Ergebnisüberischt,” Math. Z., 154, 1–16 (1977).
A. Wilansky, “Summability through functional analysis,” North-Holland Math. Stud., 85 (1984).
Author information
Authors and Affiliations
Additional information
Published in Ukrains’kyi Matematychnyi Zhurnal, Vol. 69, No. 11, pp. 1524–1533, November, 2017.
Rights and permissions
About this article
Cite this article
Mohapatra, R.N., Sarıgöl, M.A. On Matrix Operators on the Series Space \( {\left|{\overline{N}}_p^{\theta}\right|}_k \). Ukr Math J 69, 1772–1783 (2018). https://doi.org/10.1007/s11253-018-1469-0
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11253-018-1469-0