The projective symplectic group
is the Group obtained from the Symplectic Group on factoring by the Scalar Matrices contained in that Group.
is Simple except for

so it is given the simpler name , with .

**References**

Conway, J. H.; Curtis, R. T.; Norton, S. P.; Parker, R. A.; and Wilson, R. A.
``The Groups and
.'' §2.3 in
*Atlas of Finite Groups: Maximal Subgroups and Ordinary Characters for Simple Groups.* Oxford, England:
Clarendon Press, pp. x-xi, 1985.

© 1996-9

1999-05-26