Antilaplacian
The antilaplacian of 
with respect to 
is a function whose Laplacian with respect to equals . Theantilaplacian is never unique.
- Lambert's W-Function
- Lamina
- Laminated Lattice
- Lam's Problem
- Lamé Curve
- Lamé Function
- Lamé's Differential Equation
- Lamé's Differential Equation (Types)
- Lamé's Theorem
- Lancret Equation
- Lancret's Theorem
- Lanczos Approximation
- Lanczos Sigma Factor
- Landau Constant
- Landau-Kolmogorov Constants
- Landau-Ramanujan Constant
- Landau Symbol
- Landen's Formula
- Landen's Transformation
- Lane-Emden Differential Equation
- Langford's Problem
- Langlands Program
- Langlands Reciprocity
- Langton's Ant
- Laplace-Beltrami Operator