Degree one normal maps to the 3-sphere (Ex)
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Revision as of 02:55, 9 January 2019 by Diarmuid Crowley (Talk | contribs)
Let be a closed oriented 3-manifold.
- Prove that that there is a degree one normal map (since , the target bundle is trivial).
- Prove that is normally bordant to a homotopy equivalence.