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Lindelöf property of the Vietoris power V(ω^ω)

Determine whether the Vietoris power space V(ω^ω) (the space of all functions from ω to ω endowed with the Vietoris power topology generated by basic sets of the form [U; Λ, V] with U ⊆ ω, finite Λ ⊆ ω, and V:Λ→𝒫(ω)) is Lindelöf; that is, whether every open cover of V(ω^ω) has a countable subcover.

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Background

The paper develops the Vietoris power topology and analyzes many properties of V(ωω), establishing that it is separable, first-countable, zero-dimensional, Baire, and has weight and spread equal to 𝔠. However, several basic covering and separation properties are left unresolved. In Table 1 the authors mark certain entries with “?” and then formalize these unknowns as Question \ref{question:VBaire}. Deciding Lindelöfness would clarify how covering properties behave for Vietoris powers over discrete countable bases.

References

We use ? to indicate that we have not been able to verify whether the indicated space satisfies the indicated property, which we formalize as Question \ref{question:VBaire}. Is \mathsf V(\omega\omega) Lindelöf?

An Adaptation of the Vietoris Topology for Ordered Compact Sets (2507.17936 - Caruvana et al., 23 Jul 2025) in Question 4.? (labelled Question \ref{question:VBaire}), Subsection “The Vietoris Power on Subsets of Naturals”