Dr. Arthur Benjamin is a math professor at Harvey Mudd College with a Phd in Mathematical Sciences from John Hopkins University and that’s the only normal thing about this genius. According to his home page he is the author of 3 books including the very engaging “Proofs That ReallyCount”, a candid introduction to the field of combinatorics. But that’s all still normal. His real prowess lies in doing mind math. He can square five digits numbers faster than I can type them in a calculator. He calls himself a Mathemagician and according to his CV has a hobby of “racing calculators and performing magic”. Here is a video of a lecture or rather a performance he gave,
One hell of a math nerd if there ever was one and he relishes his almost magical skill. Also I was going through his research papers and he sure does a good job at giving a bigger picture of what he’s trying to explain and how everything fits together to make a whole. Here is a shorter version of the above video.
