Every Finite Group of order can be represented as a Permutation Group on letters, as first proved by Cayley in 1878 (Rotman 1995).

**References**

Rotman, J. J. *An Introduction to the Theory of Groups, 4th ed.* New York: Springer-Verlag,
p. 52, 1995.

© 1996-9

1999-05-26