Formulas
- Unit vector
- Longest element of a Coxeter group
- Longest increasing subsequence
- Look-and-say sequence
- Looman–Menchoff theorem
- Loomis–Whitney inequality
- Loop-erased random walk
- Loop algebra
- Loop space
- Lyapunov exponent
- Lyapunov fractal
- MM algorithm
- Magnitude (mathematics)
- Mahler's compactness theorem
- Mahler measure