Elder's Theorem
A generalization of Stanley's Theorem. It states that the total number of occurrences of an Integer 
amongall unordered Partitions of 
is equal to the number of occasions that a part occurs or more timesin a Partition, where a Partition which contains 
parts that each occur or more times contributes tothe sum in question.
References
Honsberger, R. Mathematical Gems III. Washington, DC: Math. Assoc. Amer, pp. 8-9, 1985.
- Langford's Problem
- Langlands Program
- Langlands Reciprocity
- Langton's Ant
- Laplace-Beltrami Operator
- Laplace Distribution
- Laplace Limit
- Laplace-Mehler Integral
- Laplace's Equation
- Laplace's Equation--Bipolar Coordinates
- Laplace's Equation--Bispherical Coordinates
- Laplace's Equation--Toroidal Coordinates
- Laplace Series
- Laplace's Integral
- Laplace-Stieltjes Transform
- Laplace Transform
- Laplacian
- Laplacian Determinant Expansion by Minors
- Large Number
- Large Prime
- Laspeyres' Index
- Latin Cross
- Latin-Graeco Square
- Latin Rectangle
- Latin Square