# Lotka’s Law The number of authors making x contributions in a field is a fraction of the number making a single contribution following 1/x^a where a is usually two So it follows approximately an inverse square laws of [Lotka’s law - Wikipedia](https://en.wikipedia.org/wiki/Lotka%27s_law) ### Related * [[Zipf’s Law]] [Web URL for this note](http://notes.benjaminreinhardt.com/Lotka’s+Law) [Comment on this note](http://via.hypothes.is/http://notes.benjaminreinhardt.com/Lotka’s+Law)