A tree $\pi $-base for $\mathbb {R}^\ast $ without cofinal branches

Fernando Hernández-Hernández

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Displaying similar documents to “A tree $π$ -base for $ℝ^{*}$ without cofinal branches”

OCA and towers in $𝒫 (ℕ) / f i n$

Ilijas Farah (1996)

Commentationes Mathematicae Universitatis Carolinae

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We shall show that Open Coloring Axiom has different influence on the algebra $𝒫 (ℕ) / f i n$ than on $ℕ^{ℕ} / f i n$ . The tool used to accomplish this is forcing with a Suslin tree.

Life in the Sacks model

Michael Hrušák (2001)

Acta Universitatis Carolinae. Mathematica et Physica

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Around splitting and reaping

Jörg Brendle (1998)

Commentationes Mathematicae Universitatis Carolinae

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We prove several results on some cardinal invariants of the continuum which are closely related to either the splitting number $𝔰$ or its dual, the reaping number $𝔯$ .

Displaying similar documents to “A tree π -base for ℝ * without cofinal branches”

OCA and towers in 𝒫 ( ℕ ) / f i n

Life in the Sacks model

Around splitting and reaping

Displaying similar documents to “A tree $π$ -base for $ℝ^{*}$ without cofinal branches”

OCA and towers in $𝒫 (ℕ) / f i n$