A simple cellular automaton ( http://en.wikipedia.org/wiki/Cellular_automaton )
written in Scala, with a trait for a few mathematical facilities.

The edges wrap around, so in order to have a CA with simpler behaviour,
a single point in the centre with greater width of the canvas than
length will give the desired results.  You'll see what I mean if you play with it.

The utilities trait shows a few ways to play with Binary Arrays and natural 
logs, including recursion, currying and use of the wildcard.