- completely symmetrizable endomorphism
- completely triangular decomposition
- completely unordered set
- completely unstable
- completely unstable flow
- completely unstable system
- completely unstable wandering
- complete manifold
- complete mapping
- complete matrix algebra
- complete matrix ring
- complete maximum principle
- complete measure
- complete measure space
- complete metric
- complete metric space
- complete minimal surface
- complete modular lattice
- complete module
- complete monomial group
- complete monotonicity
- complete multilateral
- completeness
- completeness axiom
- completeness condition