In this thread I had some naive questions about Goldbach's conjecture. Since that thread I've read more of How To Prove It, and was wondering if there was a universally agreed upon definition of a ...

Numbers seem like pretty basic items, and it might be imagined that the brain has a correspondingly simple way of handling them. In reality, however, our use of numbers is extremely complex. For ...

There was a time when a zig-zagging line didn't mean two, and a circle didn't mean zero. NPR's Eric Westervelt talks with Amir Aczel about the origins of our numbers and his book, Finding Zero. So ...