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Tom 177
Zeszyt 1
Czasopismo: Colloquium Mathematicum
Strony: 99-126
Data publikacji online: 07.01.2025
Liczba wyświetleń: 0
Liczba pobrań: 0
Abstrakt
We show that, consistently, there exists a Borel set $B\subseteq {}^{\omega }2$ admitting a sequence $\langle \eta _\alpha :\alpha \lt \lambda \rangle $ of distinct elements of ${}^{\omega }2$ such that $(\eta _\alpha +B)\cap (\eta _\beta +B)$ is uncountable for all $\alpha ,\beta \lt \lambda $ but with no perfect set $P$ such that $|(\eta +B)\cap (\nu +B)|\geq 6$ for any distinct $\eta ,\nu \in P$. This answers two questions from our previous works.