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Complement (set theory)

Summary:
FTR  Concept of a 'complement': If A is the area colored red in this image... ... then the complement of A is everything else.   In set theory, the complement of a set A refers to elements not in A.  When all sets under consideration are considered to be subsets of a given set U, the absolute complement of A is the set of elements in U but not in A.  The relative complement of A with respect to a set B, also termed the difference of sets A and B, written B ∖ A, is the set of elements in B but not in A. If A is the area colored red in this image...... then the complement of A is everything else.Now via an Art methodology:[embedded content]

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FTR  Concept of a 'complement':

If A is the area colored red in this image... ... then the complement of A is everything else.
 
 In set theory, the complement of a set A refers to elements not in A. 
When all sets under consideration are considered to be subsets of a given set U, the absolute complement of A is the set of elements in U but not in A. 
The relative complement of A with respect to a set B, also termed the difference of sets A and B, written B ∖ A, is the set of elements in B but not in A.

Complement (set theory)
If A is the area colored red in this image...

Complement (set theory)
... then the complement of A is everything else.

Now via an Art methodology:

Mike Norman
Mike Norman is an economist and veteran trader whose career has spanned over 30 years on Wall Street. He is a former member and trader on the CME, NYMEX, COMEX and NYFE and he managed money for one of the largest hedge funds and ran a prop trading desk for Credit Suisse.

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