Search for tag: "heegaard splitting"

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

Meeting 2.2: More on Heegaard diagrams, knots and…

duration 1 hour 15 minutes

Meeting 2.2: More on Heegaard diagrams, knots and…

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

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…

heegaard diagram
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From  Eric Samperton 55 plays 0  
Date of creation
2/4/2021 6:00 AM
Thumbnail for Meeting 2.1: Heegaard splittings of 3-manifolds

Meeting 2.1: Heegaard splittings of 3-manifolds

duration 58 minutes 28 seconds

Meeting 2.1: Heegaard splittings of 3-manifolds

Meeting 2.1: Heegaard splittings of 3-manifolds

Meeting 2.1: Heegaard splittings of 3-manifolds

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

3-manifold
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From  Eric Samperton 61 plays 0  
Date of creation
2/2/2021 6:00 AM