# Empty Set

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An Empty Set is a set with Zero Set Members.

**AKA:**Ø, Λ, Null Set.**Context:****Example(s):**- an Empty Sequence.
- an Empty Interval.
- an Empty String.
- …

**Counter-Example(s):**- an Non-Empty Set, such as a single member set.

**See:**Set System.

## References

### 2015

- (Wikipedia, 2015) ⇒ http://en.wikipedia.org/wiki/empty_set Retrieved:2015-6-1.
- In mathematics, and more specifically set theory, the
**empty set**is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set; in other theories, its existence can be deduced. Many possible properties of sets are trivially true for the empty set.*Null set*was once a common synonym for "empty set", but is now a technical term in measure theory. The empty set may also be called the*void set*.

- In mathematics, and more specifically set theory, the