Euler Measure
Define the Euler measure of a polyhedral set as the Euler Integral of its indicator function. It is easy to showby induction that the Euler measure of a closed bounded convex Polyhedron is always 1 (independent of dimension),while the Euler measure of a 
-D relative-open bounded convex Polyhedron is 
.
- Centered Pentagonal Number
- Centered Polygonal Number
- Centered Square Number
- Centered Triangular Number
- Center Function
- Center (Group)
- Center of Gravity
- Center of Mass
- Centillion
- Central Angle
- Central Beta Function
- 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