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Meeting 2.2: More on Heegaard diagrams, knots and knot equivalence

We continue the discussion of Heegaard diagrams from last time. I give some examples, calculate the homology of a lens space, and introduce normal curves. We then introduce knots and discuss the…

From  Eric Samperton 13 plays 0  

Meeting 2.1: Heegaard splittings of 3-manifolds

I sketch the proof that every (orientable, closed, PL) 3-manifold has a Heegaard splitting.

From  Eric Samperton 15 plays 0