1,552 reputation
416
bio website metis.ms.unimelb.edu.au/…
location Melbourne, Australia
age 31
visits member for 1 year, 5 months
seen 7 hours ago

I am a low dimensional topologist.


Mar
11
answered Genus of Tutte-Coxeter Graph
Mar
10
revised Genus of Tutte-Coxeter Graph
Added the tag reference request.
Mar
10
reviewed Reviewed Genus of Tutte-Coxeter Graph
Mar
10
suggested suggested edit on Genus of Tutte-Coxeter Graph
Mar
10
reviewed Reviewed How was Christoffel a 'whimsical eccentric'?
Mar
7
comment Does there exist a function such that $\int_{\mathbb{R}_+^{\star} } t^nf(t)dt=0$?
I just cleaned the comment up a little, so hopefully its more readable. $k$ is the floor of (t+1)/2.
Mar
7
comment Does there exist a function such that $\int_{\mathbb{R}_+^{\star} } t^nf(t)dt=0$?
Perhaps I missing an implied assumption, but I think this works. Consider a function $g_0(t)=\{0 \mbox{ on } [0,1], 1/k \mbox{ on } [2k-1,2k], -1/k \mbox{ on } (2k,2k+1)\}$. Let $g_1(t)$ be a continuous function that approximates $g_0(t)$ such that $g_1(t)$ also has the property that $\int_{x=2k} ^{2k+2} g_1(t)dt=0$. Now, let $f(t)=g_1(t)/t^n$ if $t\ne 0$ and $f(0)=0$.
Mar
3
revised Wanted: a nontrivial weakly inadmissible Heegaard diagram
Added the tags: 3-manifolds, gt.geometric-topology
Mar
3
suggested suggested edit on Wanted: a nontrivial weakly inadmissible Heegaard diagram
Feb
27
comment from Dehn twists to surgery diagram
Mark, thanks for pointing out that error and the helpful comment. I made an edit to correct my previous mistake.
Feb
27
revised from Dehn twists to surgery diagram
I changed the orientation of the Dehn twist about beta.
Feb
27
answered from Dehn twists to surgery diagram
Feb
25
comment Software for noncommutative Groebner bases over rational function fields
Have you tried searching the magma manual for Groebner bases: magma.maths.usyd.edu.au/magma/handbook/groebner_bases
Feb
24
reviewed Reviewed Exponential and Logarithm Mapping on Stiefel Manifold
Feb
21
revised Reference requested: Random walk on groups
Try to improve the focus of the question. Minor corrections to the grammar.
Feb
21
suggested suggested edit on Reference requested: Random walk on groups
Feb
19
reviewed No Action Needed Pacing for learning new material
Feb
19
comment Existence of inclusions of finite groups with a particular lattice property
I also had a question about your first remark, that I hoped you might be able to help me with. If $G$ is a perfect group and $H$ a normal subgroup how is $G/H =\mathbb{Z}/p\mathbb{Z}$?
Feb
19
answered Ray-Singer torsion of compact 3-manifolds with finite abelian fundamental group
Feb
17
answered About the power subgroups of the Bianchi groups