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No four subsets forming an \(N\) - MaRDI portal

No four subsets forming an \(N\) (Q2427561)

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No four subsets forming an \(N\)
scientific article

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    No four subsets forming an \(N\) (English)
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    13 May 2008
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    Boolean lattice
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    Sperner's theorem
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    extremal set theory
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