Where f(x) = lambda* exp(-lambda*x), Inverse cumulative distribution= -ln(1-p)/lambda. See http://en.wikipedia.org/wiki/Exponential_distribution Note that if used in random number generation, with "x" equal to the random deviate, then given U ~ uniform(0,1), then x = -ln(U)/lambda.

In the ancient Greek system, the letter Lambda had a value of 30.

Nowadays, the lower case lambda stands for the wave length. In statistics, it is the parameter of the Poisson distribution and represents the reciprocal of the frequency.

Francis Tukey died in 1867.

Francis Tukey was born in 1814.

The MGF is exp[lambda*(e^t - 1)].