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On dynamics of convergent sequences of functions on metric spaces

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Abstract

In this paper, we continue the study of the families Fu(X), Feq(X), and Fp.w.(X) on X=[0,1]. We prove that Fu(X) is a closed nowhere dense subset of Feq(X), and that Feq(X) is a closed nowhere dense subset of Fp.w.(X). We also introduce the notion of a δ -ideal-decomposition of a metric space (X,ρ), where δ:X→R+, defined as a sequence of pairwise disjoint closed sets covering X and satisfying natural δ -separation conditions. Using this framework, we show that if a sequence {fn}⊂Feq(X) converges pointwise to f and does so relative to a δ -ideal-decomposition, then it belongs to Fu(X). Furthermore, we prove that a typical function f∈B1(X,X) has a Baire–one set-valued map ωf:x↦ω(x,f), and that ωf admits a Baire–one selection. Finally, we establish that equi-limits of equi-Baire one families remain equi-Baire one.

Original languageEnglish (US)
Article number109849
JournalTopology and its Applications
Volume387
DOIs
StatePublished - Aug 2026

All Science Journal Classification (ASJC) codes

  • Geometry and Topology

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