Symplectic Group
The symplectic group 
for 
Even is the Group of elements of the General Linear Group
that preserve a given nonsingular Symplectic Form. Any such Matrixhas Determinant 1.
References
Conway, J. H.; Curtis, R. T.; Norton, S. P.; Parker, R. A.; and Wilson, R. A. ``The Groups Wilson, R. A. ``ATLAS of Finite Group Representation.''http://for.mat.bham.ac.uk/atlas/html/contents.html#symp. and 
.'' §2.3 in Atlas of Finite Groups: Maximal Subgroups and Ordinary Characters for Simple Groups. Oxford, England: Clarendon Press, pp. x-xi, 1985.
- Class Number
- Class Number Formula
- Class Representative
- Class (Set)
- Clausen Formula
- Clausen Function
- Clausen's Integral
- CLEAN Algorithm
- CLEAN Beam
- CLEAN Map
- Clebsch-Aronhold Notation
- Clebsch Diagonal Cubic
- Clebsch-Gordan Coefficient
- Clement Matrix
- Clenshaw Recurrence Formula
- Clifford Algebra
- Clifford's Circle Theorem
- Clifford's Curve Theorem
- Cliff Random Number Generator
- Clique
- Clique Number
- Clock Solitaire
- Closed Curve
- Closed Curve Problem
- Closed Disk