Formulas
- Morse–Palais lemma
- Motor variable
- Clubsuit
- Colombeau algebra
- Motzkin number
- Colossally abundant number
- Moufang set
- Combination
- Mountain climbing problem
- Multicomplex number
- Multiple-criteria decision analysis
- Multiple-scale analysis
- Combinatorial design
- Combinatorial game theory
- Combinatorial number system