๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Hereditarily finite sets and identity trees

โœ Scribed by A Meir; J.W Moon; J Mycielski


Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
622 KB
Volume
35
Category
Article
ISSN
0095-8956

No coin nor oath required. For personal study only.


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The supremum of the symmetric difference x y := (x \ y) โˆช (y \ x) of subsets x, y of R satisfies the so-called four-point condition; that is, for all x, x , y, y โІ R, one has It follows that the set E of all subsets of R which are bounded from above forms a valuated matroid relative to the map v: