Good Tom Zhang.

“The stereotype, outmoded though it is, is that new mathematical discoveries emerge from the minds of dewy young geniuses. But Zhang is over 50. What’s more, he hasn’t published a paper since 2001.”

In a surprising mathematical coup, UNH lecturer Yitang “Tom” Zhang has apparently cracked open a centuries-standing “twin-prime” puzzle about the “bounded gaps” in the distribution of prime numbers. “Yitang Zhang couldn’t get a teaching job after receiving his Ph.D., and things got so dismal at one point that he even became a Subway sandwich artist in order to stay afloat.”