The four following types of Groups,
- 1. Linear Groups,
 - 2. Orthogonal Groups,
 - 3. Symplectic Groups, and
 - 4. Unitary Groups,
 
which were studied before more exotic types of groups (such as the Sporadic Groups)
were discovered.
See also Group, Linear Group, Orthogonal Group, Symplectic Group,
Unitary Group
 
© 1996-9 Eric W. Weisstein 
1999-05-26