Subject: query Date: Wed, 4 Jun 2003 16:35:28 -0400 (EDT) From: James Stasheff I should know the answer but it's been a long time Consider M with a free involution what can be said about the relation between the SW classes before and after the quotient? any additional info if M = N x S^1? Jim Stasheff jds@math.upenn.edu Home page: www.math.unc.edu/Faculty/jds As of July 1, 2002, I am Professor Emeritus at UNC and I will be visiting U Penn but for hard copy the relevant address is: 146 Woodland Dr Lansdale PA 19446 (215)822-6707