An individual who using mathmagical powers will solve vastly complex equations, and move outside of real and non-real numbers, and instead solve using arcane numbers. Mathmagicans are a naturally occurring phenomenon, coming into existence when someone successfully divides by the number zero. Commonly heard mathmagical spells are such as, abracosinga! or Alakasum!
After hours attempting to properly engineer the building the company finally called in a mathmagician to get the proportions of the building correct within the 100 trillionth decimal place