bio  website  math.berkeley.edu/~ianagol 

location  Berkeley  
age  44  
visits  member for  5 years, 5 months 
seen  37 mins ago  
stats  profile views  12,108 
I'm a professor at UC Berkeley working predominantly in the field of lowdimensional topology.
22h

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Classes of knots that have known Bridge spectra
Have a look at the blog post: ldtopology.wordpress.com/2013/02/16/thebridgespectrum 
1d

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Classes of knots that have known Bridge spectra
Tomova's result holds for any knot for which the bridge number is the tunnel number $+1$. This holds, for example, for the 2bridge knots, and 3bridge knots which are not tunnel number 1, so e.g. not strongly invertible. 
1d

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Knot theory question: bridge number vs. min generators of fundamental group of complement
Chris Cornwell obtained lower bounds on the meridional rank of certain pretzel knots, showing they are equal to the bridge number: arxiv.org/abs/1303.4943 
Mar 26 
awarded  Popular Question 
Mar 26 
awarded  Nice Question 
Mar 24 
answered  arc length of a knot in the solid torus 
Mar 18 
comment 
hyperbolic metrics
This is true essentially by the Schwarz lemma. en.wikipedia.org/wiki/Schwarz_lemma 
Mar 18 
answered  Geometric intersection with incompressible surfaces 
Mar 17 
answered  What are known examples of a 3manifold $Y$ embedded into $Y'\times I$ where $Y'$ is another 3manifold? 
Mar 16 
revised 
Is there a non rightorderable torsionfree factor of the Braid group on 3 strands?
added 10 characters in body 
Mar 16 
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Is there a non rightorderable torsionfree factor of the Braid group on 3 strands?
$\mathbb{QP}^1$  I changed the notation, since this is probably only used by 3manifold topologists. 
Mar 16 
answered  Is there a non rightorderable torsionfree factor of the Braid group on 3 strands? 
Mar 1 
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What is the growth of the rank of a power of a finite simple group?
One may find this article here: tau.ac.il/~jarden/Articles/paper68.pdf 
Mar 1 
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What is the growth of the rank of a power of a finite simple group?
Essentially a duplicate of this question:mathoverflow.net/questions/187736/… 
Mar 1 
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What is the growth of the rank of a power of a finite simple group?
possible duplicate of Powers of finite simple groups 
Feb 27 
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Oriented knot complement conjecture for fibered knots
I suppose then one knows that 0framed surgery is fibered (with nonzero genus), which implies it has nontrivial Floer homology (as opposed to $S^2\times S^1$. So the Floer exact triangle might impose some restrictions. 
Feb 27 
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Residual finiteness: why do we care?
Residual finiteness (or rather a strengthening) was used by Friedl and Vidussi to prove: a closed 3manifold x S^1 is symplectic iff the 3manifold fibers over the circle. As for hyperbolic groups, there are various equivalent conditions to residual finiteness, such as every hyperbolic group has a finiteindex torsionfree subgroup. This may be of interest, for example, to understand cohomological dimension, or to get rid of finite center. 
Feb 19 
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Max flow, min cut on manifolds
I think you're searching for the concept of a calibrated manifold. en.wikipedia.org/wiki/Calibrated_geometry 
Feb 17 
awarded  Enlightened 
Feb 17 
awarded  Nice Answer 