Ever hear that there's two sides to every story? Well, here's something with only one side - and no boundary. It's lives in the fourth dimension, but often can be seen in Corvallis. In this undergraduate colloquium, you'll see novel twists in a Klein bottle as well as several topological manifolds hot from the annealing oven. This'll be a mathematics seminar without equations - but possibly with door prizes!
With a PhD in Planetary Physics, Cliff Stoll has worked at China's Purple Mountain Observatory, Space Telescope, Kitt Peak Observatory, and the Keck Observatory in Hawaii. He caught a spy on the early (1980s!) Internet, wrote the best-selling book "The Cuckoo's Egg", and is seen on the YouTube Numberphile channel. Cliff is Chief Bottle Washer at Acme Klein Bottles, which produces custom blown-glass Klein bottles in just three dimensions.