Graduate student mostly dabbling in algebraic geometry.

Mar
26
awarded Nice Answer
Feb
16
comment Is H a subgroup of R$^*$?
Alternatively, one could note that if $\sqrt{3}=\tfrac{a}{b}\in\Bbb{Q}$ then $H\subset\Bbb{R}^{\ast}\cap\Bbb{Q}=\Bbb{Q}^{\times}$, from which it is immediate that $H=\Bbb{Q}^{\times}$, which is clearly a subgroup of $\Bbb{R}^{\times}$.
Dec
7
asked Galois groups of quintics
Dec
4
answered Finding $J$ such that this diagram commutes
Nov
15
comment How many possible permutations are possible if ranking n entities using the 'standard competition ranking' strategy?
I think your 12255 should be 12245.
Nov
10
comment Why $\rho(AABABB)=\rho(ABAABB)$?
It is true for all $2\times2$ matrices $A$ and $B$ over $\Bbb{C}$.
Nov
10
revised $((x+ny)^n-x^n)/(n^n)=a^n-b^n$
Improved formatting, made edit suggested in the answers.
Oct
21
awarded Revival
Sep
24
awarded Autobiographer
Sep
24
awarded Autobiographer
Sep
24
awarded Autobiographer
Sep
17
answered $[0,n]$ continuous function problem
Jul
2
awarded Curious
Jul
1
reviewed Leave Open Find close points by grouping points in n-dimensional space
Jul
1
reviewed Leave Open Proof $(\frac{n+1}{n})^n>2$ for positive $n$
Jul
1
reviewed Leave Open How to evaluate $\int \frac{x^6}{x^4-1} \, \mathrm{d}x.$
Jul
1
comment Proof $(\frac{n+1}{n})^n>2$ for positive $n$
What if $n$ is not a natural number?
Jun
30
reviewed Approve suggested edit on How to see a matrix presents a linear transformation?
Jun
30
reviewed Reject suggested edit on How to prove $\frac{1}{4}(\frac{a^2}{b}+\frac{b^2}{c}+\frac{c^2}{d}+\frac{d^2}{a})\ge \sqrt[4]{\frac{a^4+b^4+c^4+d^4}{4}}$
Jun
30
reviewed Approve suggested edit on Search for two Real Valued functions.
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