# Absolute Set Difference Operation

An absolute set difference operation is a Set Difference Operation that produces the set members that are in the universal set but not in the other set.

**AKA:**ASDO, ACSO, Absolute Complement Set Operation.**Example(s):**- ASDO({a,c,d}) ⇒ {b,e}; where
**U**={a,b,c,d,e}.

- ASDO({a,c,d}) ⇒ {b,e}; where
**See:**Relative Complement Set Operation.

## References

- (Wikipedia, 2009) ⇒ http://en.wikipedia.org/wiki/Complement_(set_theory)
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**Absolute Complement:**If a universe U**is defined, then the relative complement of A in**U**is called the absolute complement (or simply complement) of [math]A[/math], and is denoted by**U*A*^{C}or sometimes*A*′, also the same set often is denoted by**C**_{U}[math]A[/math] (or**C**A if**is fixed), that is:***A*^{C}=**U**∖*A*.

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