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Antichains in Products of Linear Orders

โœ Scribed by Martin Goldstern; Saharon Shelah


Book ID
110406713
Publisher
Springer Netherlands
Year
2002
Tongue
English
Weight
99 KB
Volume
19
Category
Article
ISSN
0167-8094

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Let P be the poset k, x ~~~xk,,whichisaproductofchains,wheren>landk, >+a.> kn > 2. Let M = k, -8yT=z(kt -1). P is known to have the Sperner property, which means that its maximum ranks are maximum antichains. Here we prove that its maximum ranks are its only maximum antichains if and only if either