A number having properties departing from those of the Real and Complex Numbers. The most common examples are Biquaternions, Exterior Algebras, Group algebras, Matrices, Octonions, and Quaternions.

**References**

van der Waerden, B. L. *A History of Algebra from Al-Khwarizmi to Emmy Noether.*
New York: Springer-Verlag, pp. 177-217, 1985.

© 1996-9

1999-05-25