Mathematics – Classical Analysis and ODEs
Scientific paper
2011-02-08
Mathematics
Classical Analysis and ODEs
17 pages
Scientific paper
In this paper we call a real-valued function lacunarily statistically ward continuous if it preserves lacunary statistical quasi-Cauchy sequences where a sequence $(\alpha_{k})$ is defined to be lacunarily statistically quasi-Cauchy when the sequence $(\Delta \alpha_{k})$ is lacunarily statistically convergent to 0. We prove theorems related to lacunary statistical ward compactness, statistical ward compactness, lacunary statistical ward continuity, statistical ward continuity, ward continuity, and uniform continuity. It turns out that any lacunarily statistically ward continuous function on a lacunary statistically ward compact subset $A$ of \textbf{R} is uniformly continuous on $A$. We also prove some inclusion theorems between the set of lacunary statistical quasi-Cauchy sequences and the set of statistical quasi-Cauchy sequences.
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