Hannah Cairo found herself stuck on a problem that wouldn't leave her mind. It wasn't a regular homework assignment—it was a decades-old mathematical puzzle believed to be true by leading experts in ...

Mathematics has its share of prodigies, but rarely does someone so young alter the shape of the field before even earning their first degree. At 17, Hannah Cairo, a homeschooled teenager, has ...

It’s not that anyone ever said sophisticated math problems can’t be solved by teenagers who haven’t finished high school. But the odds of such a result would have seemed long. Yet a paper posted on ...