2,540 reputation
725
bio website metis.ms.unimelb.edu.au/…
location Melbourne, Australia
age 32
visits member for 2 years, 9 months
seen 2 days ago

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/known-math/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.geometric-topology
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 self-homeomorphism 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 theta-function 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 co-Hopfian. 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 3-manifolds with isomorphic fundamental groups
Thanks Henry. Isn't assumed throughout your paper that you guys discuss only oriented 3-manifolds? I was really hoping to find a reference that deals with the non-orientable case as well. I fully understand why one would like to avoid the pathologies of non-orientable manifolds especially when considering virtual properties. However, I wondering if anyone has a nice approach to 3-manifolds with the same fundamental group regardless of orientablity.