411 REFERENCE · Wiktionary
Scott-open
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after the mathematician Dana Scott.
Adjective
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en math Of a subset O of a partially ordered set P: such that it is an upper set and is inaccessible by directed joins, i.e. all directed sets D with supremum in O have non-empty intersection with O.
en eponyms