Mathematicians have made a breakthrough in one of the thorniest math problems out there — only the third major step forward in 75 years. The problem involves Ramsey numbers, a deceptively simple ...

As an undergraduate at the University of Chile, Bernardo Subercaseaux took a dim view of using computers to do math. It seemed antithetical to real intellectual discovery. “There’s some instinct or ...

One idle evening last October, Mehtaab Sawhney took up an old pastime. He began perusing the website erdosproblems.com, an updated record of the 1,179 conjectures left behind by the eccentric and ...