Thanks! Apparent'y I've had it in my computer for ages but I just forgot about it completely. It was buried under the mountain of icon files I've hoarded but never used.

I love that math genius feeling! It demonstrates that math is pretty cool, deep down. But instead of wanting to make you feel smart, they seem to want to make you feel stupid unless you're actually a math genius, so that all the math bimbos will flee the maths and leave it free of their taint.