Ω\choose T≠ Ω\choose Γ

2025/08/21 by Dominic van der Zypen, van der Zypen, Dominic
Computer Science · Mathematics · #03E75 #54A20 #54C65 #54D20 #Advanced Banach Space Theory #Advanced Topology and Set Theory #Computability, Logic, AI Algorithms #FOS: Mathematics #General Topology (math.GN)

paper · pdf · doi:10.48550/arxiv.2509.00032

openalex publication_date 2025/08/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We show that the selection principles Ω\choose T and Ω\chooseΓ are not equal constructing a topological space (X,τ) that satisfies Ω\choose T, but not Ω\choose Γ. This answers a question from arXiv:math/0301011 .

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