hyper... math?!?!?! (and definition) I was looking on HyperPhysics for the definition of "interband electronic transitions" (which I still haven't found--help me, someone, please!), when suddenly, there it was! A link directly under the flowchart, that read HyperMath. So I followed it. Blessed, blessed HyperPhysics people who also give us HyperMath!