Formulas
- Ordered vector space
- Kolmogorov continuity theorem
- Kolmogorov extension theorem
- Kolmogorov space
- Kontorovich–Lebedev transform
- Kostant polynomial
- Wiener deconvolution
- Lefschetz duality
- Lefschetz fixed-point theorem
- Ordinal arithmetic
- Lefschetz hyperplane theorem
- Lefschetz manifold
- Lefschetz pencil
- Lefschetz theorem on (1,1)-classes
- Lefschetz zeta function