UPPERSET

Upper set

The powerset algebra of the set <math>\{1,2,3,4\}</math> with the upset <math>\uparrow\{1\}</math> colored green.]]

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upper set

Noun

  1. A subset of a poset which contains any ascending chain which starts at any element of itself.


The above text is a snippet from Wiktionary: upper set
and as such is available under the Creative Commons Attribution/Share-Alike License.

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