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Aug
20
revised Classification of tangles?
fix typos
Aug
17
revised Classification of tangles?
added remark about Dehn twist equivalence between pared tangles.
Aug
16
revised Classification of tangles?
added question
Aug
16
answered Classification of tangles?
Aug
9
reviewed Approve suggested edit on Positive operators - norm equality
Aug
5
revised Computable link invariants
Reread the question and realized it might be asking something else...
Aug
5
comment Computable link invariants
Rereading your question, I realize that there are two possible versions. I'll add that to the answer.
Aug
5
answered Computable link invariants
Aug
2
comment Going Back-and-Forth Between Different Expressions/“Representations” for Open Books.
Yes, I believe this is correct.
Jul
27
reviewed Approve suggested edit on How do I show that a separable isogeny is central?
Jul
27
answered Reference for the result that the systol map from Teichmuller space to curve complex is coarsely Lipschitz
Jul
27
comment Going Back-and-Forth Between Different Expressions/“Representations” for Open Books.
The subtle point is indeed subtle: when I said "The (re-)gluing is the desired homeomorphism." I left out a framing issue. The re-gluing is determined up to isotopy. We have to also compute how many times to Dehn twist about the boundary. This information is recorded in the meridional curves on $\partial N(B)$ -- the boundary of a regular neighborhood of the binding.
Jul
26
comment Going Back-and-Forth Between Different Expressions/“Representations” for Open Books.
Yes - that is right. However you should probably write $\Sigma_\theta$, not $\Sigma_\pi$.
Jul
26
revised Going Back-and-Forth Between Different Expressions/“Representations” for Open Books.
typo
Jul
26
comment Going Back-and-Forth Between Different Expressions/“Representations” for Open Books.
If you are given the bundle and the projection map, then cut the bundle along a fiber. The (re-)gluing (to recover the bundle from $\Sigma \times I$) is the desired homeomorphism.
Jul
26
revised Going Back-and-Forth Between Different Expressions/“Representations” for Open Books.
Answering the rest of part three.
Jul
26
answered Going Back-and-Forth Between Different Expressions/“Representations” for Open Books.
Jul
24
comment Max flow, min cut on manifolds
Thurston made some cryptic remarks along these lines at his 60th birthday conference, and in the same sentence referred to a preprint with Claire Mathieu, titled "Rotation distance between binary trees: hyperbolic geometry vs. max-flow min-cut". Amazingly this is referred to exactly once online: theory.stanford.edu/~aflb/1992-93.html -- perhaps contacting Prof Mathieu is the right course of action.
Jul
19
revised A question about Dehn surgery and Brieskorn homology 3-spheres
typo - also added result of computer search.
Jul
19
comment A question about Dehn surgery and Brieskorn homology 3-spheres
Oops! Obviously the form I gave above is cubic, not quadratic.