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On the well-ordered subsets of the continuum

โœ Scribed by Oswald Veblen


Book ID
105697232
Publisher
Springer Milan
Year
1908
Tongue
Italian
Weight
24 KB
Volume
25
Category
Article
ISSN
0009-725X

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๐Ÿ“œ SIMILAR VOLUMES


On the minimal cofinal subsets of a dire
โœ Wang Shang-Zhi; Li Bo-Yu ๐Ÿ“‚ Article ๐Ÿ“… 1984 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 818 KB

It is shown that for any directed quasi-ordered set (Q, ~<), there is a minimal ordinal number h such that every cofinal subset of Q contains a cofinal subset which is the 0-th class original set of a pure h-th class chain of Q. A special case of our results gives necessary and sufficient conditions