Universe (mathematics)
In mathematics, and particularly in set theory and the foundations of mathematics, a universe is a class that contains (as elements) all the entities one wishes to consider in a given situation. There are several versions of this general idea, described in the following sections.
Read more about Universe (mathematics): In A Specific Context, In Ordinary Mathematics, In Set Theory, In Category Theory
Famous quotes containing the word universe:
“Whatever universe a professor believes in must at any rate be a universe that lends itself to lengthy discourse. A universe definable in two sentences is something for which the professorial intellect has no use. No faith in anything of that cheap kind!”
—William James (1842–1910)