Cardinal Number (Noun)
Meaning
The number of elements in a mathematical set; denotes a quantity but not the order.
Classification
Nouns denoting quantities and units of measure.
Examples
- The cardinal number of the set of students in the class is 25, regardless of their seating arrangement.
- In set theory, the cardinal number of a set is a measure of the number of elements it contains.
- The cardinal number of the set of integers is infinite, as there is no largest integer.
- When comparing the sizes of two sets, we are comparing their cardinal numbers.
- The cardinal number of the empty set is 0, as it contains no elements.