cardinal number
finite or infinite number that measures cardinality (size) of sets
limit cardinal
class of cardinal numbers
unfoldable cardinal
kind of large cardinal number
beth number
ordered sequence of transfinite numbers used to represent the cardinality (or size) of continuous sets
shrewd cardinal
kind of large cardinal number
aleph number
alef symbol (U+2135) or aleph, written left-to-right as the mathemical symbol ‹ℵ› for the first transfinite cardinal (countable); ordered sequence of transfinite numbers used to represent the cardinality (or size) of infinite countable sets
cardinality of the continuum
cardinality of the set of real numbers
aleph null
cardinal of the set of all natural numbers, and more generally of any well-ordered and countable infinite set
superstrong cardinal
kind of large cardinal number
count variable
statistical data type
large cardinal
cardinal number in set theory not provable from ZFC
dimension of a vector space
number of vectors in any basis of the vector space
regular cardinal
cardinal number that equals its own cofinality
Berkeley cardinal
large cardinal number 𝜅, incompatible with the axiom of choice, such that for any transitive set 𝑀∋𝜅 and 𝛼<𝜅, there is a nontrivial elementary embedding 𝑀→𝑀 with critical point strictly between 𝛼 and 𝜅