Formulas
- Limaçon
- Lindemann–Weierstrass theorem
- Lindley's paradox
- Line (geometry)
- Linear congruential generator
- Linear logic
- Linear relation
- Linear search
- Linear time-invariant system
- Line–line intersection
- Linkage principle
- Liouville's equation
- Liouville's theorem (complex analysis)
- Liquid crystal
- Lissajous curve