Math

The founder of a Japanese media company has offered a large cash prize to anyone who can find a flaw in an unusual proof 

The twisty history and surprise ending of the four-color-theorem saga

As it turns out, felines can survive a fall from any height—at least in theory

There are infinite real and natural numbers—yet real numbers exceed natural numbers thanks to the mind-bending logic of infinities

A surprisingly simple answer to a mathematical puzzle intrigues the math world

Zero-knowledge proofs allow mathematicians to prove claims without explaining why they’re true

The coin rotation paradox flummoxed SAT test writers even though we encounter this math problem every day

In 2013 a new user named Cleo took an online math forum by storm with unproved answers. Today she’s an urban legend. But who was she?

To craft a better password, first learn how people crack them

Perfectly wrapping spherical objects together seems trivial, but it’s a task that has stumped mathematicians for centuries

Math research gives meaning to years spent in prison 

The ChatGPT AI can ace an IQ test, but it can’t beat brainteasers like those devised by legendary math puzzler Martin Gardner