Abstract

In this paper, we introduce the concept of lacunary statistical boundedness of Δ-measurable real-valued functions on an arbitrary time scale. We also give the relations between statistical boundedness and lacunary statistical boundedness on time scales.

Highlights

  • The idea of statistical convergence was formally introduced by Fast [1] and Steinhaus [2], independently

  • The natural density of K is defined by δ(K) = limnn–1|Kn| if the limit exists, where |Kn| indicates the cardinality of Kn

  • The idea of statistical convergence was first studied on time scales in [26] and [27], independently

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Summary

Introduction

The idea of statistical convergence was formally introduced by Fast [1] and Steinhaus [2], independently. Definition 1.1 ([27]) A -measurable function f : T → R is statistically convergent to a number L on T if, for every ε > 0, lim μ ({s ∈ [t0, t]T : |f (s) – L| ≥ ε}) = 0, t→∞ A -measurable function f : T → R is said to be lacunary statistically convergent to a number L if, for every ε > 0, lim μ ({s ∈ (kr–1, kr]T : |f (s) – L| ≥ ε}) = 0, r→∞

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