The proof resolves a nearly 80-year-old problem known as the Duffin-Schaeffer conjecture. In doing so, it provides a final answer to a question that has preoccupied mathematicians since ancient times: ...

"If pi is infinite, how come we can use it in math problems?" asked a student in Gregg Thompson's sixth-grade social studies class at Woodland Middle School in Gurnee. Say your prized marble ...