Area-Preserving Map
A Map 
from 
to is Area-preserving if
for every subregion
of , where 
is the 
-D Measure of . A linear transformation isArea-preserving if its corresponding Determinant is equal to 1.See also Conformal Map, Symplectic Map- Königsberg Bridge Problem
- König's Theorem
- Kürschák's Tile
- L1-Norm
- L2-Norm
- L2-Space
- Labeled Graph
- Lacunarity
- Ladder
- Ladder Graph
- Lagrange Bracket
- Lagrange-Bürmann Theorem
- Lagrange Expansion
- Lagrange Interpolating Polynomial
- Lagrange Inversion Theorem
- Lagrange Multiplier
- Lagrange Number (Diophantine Equation)
- Lagrange Number (Rational Approximation)
- Lagrange Polynomial
- Lagrange Remainder
- Lagrange Resolvent
- Lagrange's Continued Fraction Theorem
- Lagrange's Equation
- Lagrange's Four-Square Theorem
- Lagrange's Group Theorem