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Jan
16
awarded  Nice Answer
Jan
16
comment What is known about the algebraic variety defined by the group determinant?
@JasonStarr: you should promote your comments to an answer.
Jan
13
awarded  Nice Answer
Jan
8
reviewed Leave Open Who is the original author of this simple paradoxical decomposition?
Jan
8
reviewed Close Coersivity of a bilinear form
Jan
8
reviewed Close How to find a subset of a matrix that has minimum condition number?
Jan
8
answered Uniqueness of hyperbolic rescaling
Jan
7
comment Uniqueness of hyperbolic rescaling
Let $h$ be the hyperbolic metric. We can apply $q^*$ to the identity $e^{2f_0}p^*(g)=h$ to get $e^{2f_0q}(pq)^*(g)=q^*(h)=h$, so $f_0q$ is related to $pq$ in the same way that $f_0$ is related to $p$.
Jan
7
comment Uniqueness of hyperbolic rescaling
I don't think $f$ depends on $p$. If you change $p$ to $pq$ then $f_0$ becomes $f_0q$, but $f$ is characterised by $f_0=fp$ or $f_0q=fpq$ and so $f$ does not change.
Jan
7
revised Uniqueness of hyperbolic rescaling
added 10 characters in body
Jan
7
asked Uniqueness of hyperbolic rescaling
Dec
18
awarded  Enlightened
Dec
18
awarded  Nice Answer
Dec
17
answered Does module Hom commute with tensor product in the second variable?
Dec
17
comment Does module Hom commute with tensor product in the second variable?
$A=M=\mathbb{Z}$, $L=N=\mathbb{Q}$
Nov
25
revised The number of submodules of $\mathbb{Z}_q^n$
deleted 2 characters in body
Nov
25
answered The number of submodules of $\mathbb{Z}_q^n$
Nov
24
comment Does the reference letter writer know which school his/her letter is sent to?
This would be more appropriate at academia.stackexchange.com
Nov
17
reviewed Close Efficient sampling from a polytope with large number of contraints
Nov
15
awarded  Necromancer