When: Wednesday, April 26, 2000, 7:30 p.m. Where: 210 ASB (Skaggs Biology Building) Abstract: We live in a world of three dimensions, but mathematicians have found ways to think about four dimensions and more. Shapes in these higher dimensional spaces are used in physics, computer design, statistics, and many other fields. We'll learn how to "visualize" some of these geometric figures, and we will talk about their history and use.