Definition talk:Periodic Function

Left this open to define periodicity for complex functions as well. I hear tell there are interesting little beasts called Jacobians or something like that, which are periodic in two dimensions. I bet if I looked into it nice and hard, I'd find Hamiltonian functions which are periodic in 4 dimensions. Lets's not go down the route of octonions or sedenions quite yet, I haven't finished that book of Conway's yet. --Matt Westwood 19:38, 28 January 2009 (UTC)