Formulas
- Impedance bridging
- Implication graph
- List of types of numbers
- List of unsolved problems in computer science
- Lists of integrals
- Lists of uniform tilings on the sphere, plane, and hyperbolic plane
- Liu Hui's π algorithm
- K (disambiguation)
- Turing jump
- Moving load
- Luke's variational principle
- Luminosity distance
- Optics
- Skinny triangle
- Symmetric group