Barnes-Wall Lattice
A lattice which can be constructed from the Leech Lattice 
.
References
Barnes, E. S. and Wall, G. E. ``Some Extreme Forms Defined in Terms of Abelian Groups.'' J. Austral. Math. Soc. 1, 47-63, 1959. Conway, J. H. and Sloane, N. J. A. ``The 16-Dimensional Barnes-Wall Lattice 
.'' §4.10 in Sphere Packings, Lattices, and Groups, 2nd ed. New York: Springer-Verlag, pp. 127-129, 1993.
- Central Binomial Coefficient
- Central Conic
- Central Difference
- Centralizer
- Central Limit Theorem
- Central Trinomial Coefficient
- Centrode
- Centroid (Function)
- Centroid (Geometric)
- Centroid (Orthocentric System)
- Centroid (Triangle)
- Certificate of Compositeness
- Certificate of Primality
- Cesàro Equation
- Cesàro Fractal
- Cesàro Mean
- Ceva's Theorem
- Cevian
- Cevian Conjugate Point
- Cevian Transform
- Cevian Triangle
- Chain
- Chained Arrow Notation
- Chainette
- Chain Fraction