Displaying similar documents to “Maximal σ-independent families”

Incomparable families and maximal trees

G. Campero-Arena, J. Cancino, M. Hrušák, F. E. Miranda-Perea (2016)

Fundamenta Mathematicae

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We answer several questions of D. Monk by showing that every maximal family of pairwise incomparable elements of 𝒫(ω)/fin has size continuum, while it is consistent with the negation of the Continuum Hypothesis that there are maximal subtrees of both 𝒫(ω) and 𝒫(ω)/fin of size ω₁.

Cylinder problem

K. Ciesielski, F. Galvin (1987)

Fundamenta Mathematicae

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