English

Functions preserving slowly oscillating double sequences

General Mathematics 2013-12-31 v1

Abstract

A double sequence x={xk,l}\textbf{x}=\{x_{k,l}\} of points in R\textbf{R} is slowly oscillating if for any given ε>0\varepsilon>0, there exist α=α(ε)>0\alpha=\alpha(\varepsilon)>0, δ=δ(ε)>0\delta=\delta (\varepsilon) >0, and N=N(ε)N=N(\varepsilon) such that xk,lxs,t<ε|x_{k,l}-x_{s,t}|<\varepsilon whenever k,lN(ε)k,l\geq N(\varepsilon) and ks(1+α)kk\leq s \leq (1+\alpha)k, lt(1+δ)ll\leq t \leq (1+\delta)l. We study continuity type properties of factorable double functions defined on a double subset A×AA\times A of R2\textbf{R}^{2} into R\textbf{R}, and obtain interesting results related to uniform continuity, sequential continuity, and a newly introduced type of continuity of factorable double functions defined on a double subset A×AA\times A of R2\textbf{R}^{2} into R\textbf{R}.

Keywords

Cite

@article{arxiv.1312.7341,
  title  = {Functions preserving slowly oscillating double sequences},
  author = {Huseyin Cakalli and Richard F. Patterson},
  journal= {arXiv preprint arXiv:1312.7341},
  year   = {2013}
}

Comments

11 pages. arXiv admin note: substantial text overlap with arXiv:1312.6602

R2 v1 2026-06-22T02:35:55.929Z