Date: Thu, 10 Feb 2000 14:37:47 -0600 (CST) From: Brayton Gray Subject: question for discussion list I remember seeing a fairly nice model for the projective plane immersed in R^3 made of steel bands - possibly at Oberwolfach or Bonn - I can't remember where. My question: does anyone who might remember this model, or any good model, know of a good source for this on the web - or better yet, a maple program, or something that can be rotated? Something for students to look at. Brayton Gray