bio  website  metis.ms.unimelb.edu.au/… 

location  Melbourne, Australia  
age  32  
visits  member for  2 years, 9 months 
seen  2 days ago  
stats  profile views  567 
I am a low dimensional topologist.
2d

answered  SO$(4)$ (& SO$(n)$) characterization? 
2d

comment 
SO$(4)$ (& SO$(n)$) characterization?
@TobiasFritz While I agree that this question is similar to the one in your link. This question seems to focus on $SO(4)$ while the other question focuses on $SO(n)$, $n>4$. 
Jul 29 
comment 
Generating finite simple groups with $2$ elements
This link appears to be broken. After doing some digging on David Rusin's NIU page, it appears like this is the current version of the link: math.niu.edu/Papers/Rusin/knownmath/98/2generators 
Jul 23 
reviewed  Reviewed Easiest way to see that $\zeta_{\mathbb{Z}[i]}(s) = \zeta(s) L(s, \chi)$? 
Jul 21 
awarded  Disciplined 
Jul 17 
awarded  gt.geometrictopology 
Jul 16 
answered  Brieskorn homology spheres 
Jun 29 
comment 
Automorphism of genus 2 surface with 5 fixed points
@WillSawin Thanks! Although if $S^2(2,2,2,2,2)$ exists as a cyclic quotient, the selfhomeomorphism on the genus two surface wouldn't correspond to an involution, but rather a symmetry of order 4. Can that be ruled out as well? 
Jun 29 
answered  Automorphism of genus 2 surface with 5 fixed points 
Jun 11 
reviewed  Approve Lie Algebra, counterexample 
May 22 
reviewed  Approve Is g( ) rational if it looks that way on a large rational subset? 
May 19 
reviewed  Approve When the Lovász thetafunction saturates its upper bound 
May 18 
awarded  Deputy 
May 14 
reviewed  Reviewed Why do people use “formal calculation” to describe informal calculations? 
May 11 
reviewed  Approve Does the following type of Gronwall inequality hold? 
May 6 
comment 
Kleinian groups containing an isomorphic copy of itself
@DannyNguyen I don't understand your comment and I would be grateful if you could help me clear up my misunderstandings. First, you have dropped the condition that the subgroup be proper, which seems essential to the definition of coHopfian. Second, I don't follow why "is" is in bold in your correction. 
May 3 
reviewed  Approve Vanishing of $\hat{A}$ genus and positive scalar curvature 
Apr 30 
reviewed  Reviewed how wiggly is a generic level set? 
Apr 30 
reviewed  Reviewed Irreducibles in polynomial rings 
Apr 29 
comment 
3manifolds with isomorphic fundamental groups
Thanks Henry. Isn't assumed throughout your paper that you guys discuss only oriented 3manifolds? I was really hoping to find a reference that deals with the nonorientable case as well. I fully understand why one would like to avoid the pathologies of nonorientable manifolds especially when considering virtual properties. However, I wondering if anyone has a nice approach to 3manifolds with the same fundamental group regardless of orientablity. 