# cardinality

cardinality
/kahr'dn al"i tee/, n., pl. cardinalities. Math.
(of a set) the cardinal number indicating the number of elements in the set.
[1930-35; CARDINAL + -ITY]

* * *

Universalium. 2010.

### Look at other dictionaries:

• cardinality — 1520s, condition of being a cardinal, from CARDINAL (Cf. cardinal) (q.v.) + ITY (Cf. ity). Mathematical sense is from 1935 …   Etymology dictionary

• Cardinality — In mathematics, the cardinality of a set is a measure of the number of elements of the set . For example, the set A = {1, 2, 3} contains 3 elements, and therefore A has a cardinality of 3. There are two approaches to cardinality ndash; one which… …   Wikipedia

• cardinality — noun a) Of a set, the number of elements it contains. The empty set has a cardinality of zero. b) The property of a relationship between a database table and another one, specifying whether it is one to one, one to many, many to one, or many to… …   Wiktionary

• cardinality — The cardinality of a set is the cardinal number that measures the number of its members …   Philosophy dictionary

• Cardinality (disambiguation) — Cardinality may refer to* Cardinality of a set, a measure of the number of elements of a set in mathematics * Cardinality (data modeling), a term in database design * Cardinality (SQL statements), a term used in SQL statements * Cardinal utility …   Wikipedia

• Cardinality (SQL statements) — In SQL (Structured Query Language), the term cardinality refers to the uniqueness of data values contained in a particular column (attribute) of a database table. The lower the cardinality, the more duplicated elements in a column. Thus, a column …   Wikipedia

• Cardinality of the continuum — In mathematics, the cardinality of the continuum, sometimes also called the power of the continuum, is the size (cardinality) of the set of real numbers mathbb R (sometimes called the continuum). The cardinality of mathbb R is often denoted by… …   Wikipedia

• Cardinality (data modeling) — In data modeling, the cardinality of one data table with respect to another data table is a critical aspect of database design. Relationships between data tables define cardinality when explaining how each table links to another. In the… …   Wikipedia

• Cardinality equals variety — The musical operation of scalar transposition shifts every note in a melody by the same number of scale steps. The musical operation of chromatic transposition shifts every note in a melody by the same distance in pitch class space. In general,… …   Wikipedia

• cardinality — noun (plural ties) Etymology: 1cardinal + ity Date: 1935 the number of elements in a given mathematical set …   New Collegiate Dictionary