# Cartesian Product

In set theory a Cartesian product is a mathematical operation that returns a set 
(or product set or simply product) from multiple sets. That is, for sets A and B,
the Cartesian product A × B is the set of all ordered pairs (a, b)
where a ∈ A and b ∈ B. 

Cartesian product `AxB` of two sets `A={x,y,z}` and `B={1,2,3}`

![Cartesian Product of Two Sets](https://upload.wikimedia.org/wikipedia/commons/4/4e/Cartesian_Product_qtl1.svg)

## References

[Wikipedia](https://en.wikipedia.org/wiki/Cartesian_product)