Noun
aleph number (plural aleph numbers)
English Wikipedia has an article on:aleph numberWikipedia
(set theory) Any of a sequence of numbers used to represent the cardinality of infinite sets, denoted by the Hebrew letter aleph.
These state: * Every compact Hausdorff space of weight at most (see Aleph number ) is the continuous image of N* (this does not need the continuum hypothesis, but is less interesting in its absence). Source: Internet