Formulas
- Lempel–Ziv–Markov chain algorithm
- Length contraction
- Lenoir cycle
- Lens (geometry)
- Lenstra elliptic-curve factorization
- Lepton
- Lepton number
- Levi-Civita connection
- Lexical density
- Li's criterion
- Lie algebra extension
- Lieb–Oxford inequality
- Likelihood-ratio test
- Likelihood function
- Likelihood principle