Infinity-Borel Set
In set theory, a subset of a Polish space is ∞-Borel if it can be obtained by starting with the open subsets of, and transfinitely iterating the operations of complementation and wellordered union. Note that the set of ∞-Borel sets may not actually be closed under wellordered union; see below.
Read more about Infinity-Borel Set: Formal Definition, Incorrect Definition, Alternative Characterization
Famous quotes containing the word set:
“There is nothing more mysterious than a TV set left on in an empty room. It is even stranger than a man talking to himself or a woman standing dreaming at her stove. It is as if another planet is communicating with you.”
—Jean Baudrillard (b. 1929)
Related Phrases
Related Words