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Selection theorems, based on generalized variation and oscillation

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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).

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This research was partially supported by the Ministero della Pubblica Istruzione (Italy).

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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

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  • DOI: https://doi.org/10.1007/BF02843906

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