Helly's Theorem
If 
is a family of more than 
bounded closed convex sets in Euclidean -space 
, and if every 
(where is the Helly Number) members of have at least one point in common, then all the members of have at least one point in common.
- Logarithmic Spiral Inverse Curve
- Logarithmic Spiral Pedal Curve
- Logarithmic Spiral Radial Curve
- Logic
- Logical Paradox
- Logistic Distribution
- Logistic Equation
- Logistic Equation r=4
- Logistic Growth Curve
- Logistic Map
- Logit Transformation
- Log Likelihood Procedure
- Log Normal Distribution
- Logos
- Log-Series Distribution
- Log-Weibull Distribution
- Lommel Differential Equation
- Lommel Function
- Lommel Polynomial
- Lommel's Integrals
- Long Division
- Long Exact Sequence of a Pair Axiom
- Longitude
- Long Prime
- Look and Say Sequence