Old changes to Lectures 1 and 2:-
- v8 8 February, 2013. Separated the loop-orientation result as a Theorem, expanded the proof, changed Exercise 1 and added more material nearby.
- v7 7 February, 2013 Statement about local compactness changed and then restored!
- v6 7 February, 2013: A little more material on hopes and dreams.
- v5 7 February, 2013: More material on regularity and reparameterization added.
- v4 5 February, 2013; there is a distracting typo in v3 with the spin frame bundle where the oriented frame bundle should be. Thanks Aaron, I think it is fixed now.