Subject: question about SU(3)/SO(3) From: Peter Landweber Date: Mon, 7 Aug 2006 19:01:27 -0400 Here's a small question for the discussion group. I believe it is known that the 5-manifold SU(3)/SO(3), which is simply connected, represents a generator of the 5-dimensional unoriented cobordism ring. In fact, I believe there is some reference for this fact, which should include the further fact that the product of Stiefel-Whitney classes w_2w_3 is nonzero. Having forgotten the reference, I hope someone can remind me of such a reference, or give an argument for these results. Thanks! Peter