Looking for a cool gift for someone mathematically inclined? An unusual, conversation-generating token of appreciation? The World Wide Web offers a number of intriguing possibilities–if you know where ...

Ever since I became interested in math, I’ve always wanted a Klein bottle. It therefore comes as no surprise that ever since receiving one, I’ve been completely enthralled with it. I stare at it every ...

This Escher-looking structure is the Klein Bottle. It exists only in four dimensions, has only one surface, and contains itself. See what happens when the Möbius Strip turns to drink. Many people have ...

Looking for a cool gift for someone mathematically inclined? An unusual, conversation-generating token of appreciation? The World Wide Web offers a number of intriguing possibilities–if you know where ...