Abstract
In this paper we prove selection theorems for everywhere and almost everywhere convergent subsequences, based on the notion of uniformly limited oscillation, ofA, Λ-oscillation and ofA, Λ-variation, whereA is a system of intervals and Λ a sequence of reals. By this, we generalize and strengthen the selection theorems of Schrader (for oscillation) and of Waterman (for Λ-variation).
Similar content being viewed by others
References
Bongiorno B., and Vetro P.,Su un teorema di F. Riesz, Atti Acc. Sc. Lett. Arti Palermo, serie IV,37(1977–78), parte I, 3–13.
Di Piazza L., and Maniscalco C.,On generalized bounded variation, Contemporary Mathematics, A.M.S.42 (1985), 179–185.
Hardy G.H., Littlewood J.E., and Polya G.,Inequalities, 2nd ed., Cambridge University Press 1964.
Perlman S.,Functions of generalized variation, Fund. Math., CV (1980), 199–211.
Ramsey F.,On a problem of formal logic, Proc. London Math. Soc., (2)30 (1930), 264–286.
Schrader K.,A generalization of the Helly Selection theorem, Bull. Am. Math. Soc.78 (1972), 415–419.
Schramm M.,Functions of Φ-bounded variation and Riemann-Stieltjes integration, Trans. Amer. Math. Soc.287 (1985), 49–63.
Waterman D.,On convergence of Fourier series of functions of generalized bounded variation, Studia Math.44 (1972), 107–117.
Waterman D.,On Λ-bounded variation, Studia Math.57 (1976), 33–45.
Author information
Authors and Affiliations
Additional information
This research was partially supported by the Ministero della Pubblica Istruzione (Italy).
Rights and permissions
About this article
Cite this article
Di Piazza, L., Maniscalco, C. Selection theorems, based on generalized variation and oscillation. Rend. Circ. Mat. Palermo 35, 386–396 (1986). https://doi.org/10.1007/BF02843906
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02843906