Sylvester's Determinant Identity
where
is the submatrix of 
formed by the intersection of the subset 
of columns and 
of rows.- Cancellation
- Cancellation Law
- Cannonball Problem
- Canonical Form
- Canonical Polyhedron
- Canonical Transformation
- Cantor Comb
- Cantor-Dedekind Axiom
- Cantor Diagonal Method
- Cantor Diagonal Slash
- Cantor Dust
- Cantor Function
- Cantor's Equation
- Cantor Set
- Cantor's Paradox
- Cantor Square Fractal
- Cantor's Theorem
- Cap
- Capacity
- Capacity Dimension
- Carathéodory Derivative
- Carathéodory's Fundamental Theorem
- Cardano's Formula
- Cardinality
- Cardinal Number