Chevalley Groups

Finite Simple Groups of Lie-Type. They include four families of linear Simple Groups: ${\it PSL}(n,q)$, ${\it PSU}(n,q)$, ${\it PSp}(2n,q)$, or $P\Omega^\epsilon (n,q)$.

See also Twisted Chevalley Groups

References

Wilson, R. A. ``ATLAS of Finite Group Representation.'' http://for.mat.bham.ac.uk/atlas/html/contents.html#exc.