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A note on hierarchies of Borel type sets

✍ Scribed by S.D. Iliadis

Book ID
113933794
Publisher
Elsevier Science
Year
2012
Tongue
English
Weight
112 KB
Volume
159
Category
Article
ISSN
0166-8641

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Given a (finite or infinite) set X, a collection C P(X ) of subsets of X is called a hierarchy if it satisfies the condition ` '' In this note, we characterize maximal hierarchies as set systems that contain the empty set, the full set, and all one-element sets, and in addition satisfy either one of

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