athos
Reputation
408
Next privilege 500 Rep.
Access review queues
 2d awarded Popular Question Apr 29 accepted Don't understand the proof of Artin's “Algebra” Ed 1, Prop 5-8.4 Apr 29 comment Don't understand the proof of Artin's “Algebra” Ed 1, Prop 5-8.4 Thank you so much! Now I got it. Apr 28 comment Don't understand the proof of Artin's “Algebra” Ed 1, Prop 5-8.4 I still don't get it. What you said is , for $s\in S_n$ and $\alpha \in Aut(S_n)$, let $s' = \alpha s$, then $s$ and $s'$ has the same order -- but why? Secondly, what Artin says is, if $s\in S_n$ and $t\in S_n$ has different order, then $s$ and $t$ will be in different orbit -- how could I reach this from your point? Apr 28 revised Don't understand the proof of Artin's “Algebra” Ed 1, Prop 5-8.4 added 3 characters in body Apr 28 asked Don't understand the proof of Artin's “Algebra” Ed 1, Prop 5-8.4 Apr 28 accepted How to define such a non-constant, continuous $f(x)$ on $[a,b] \subset \mathbb R$ Apr 23 revised How to define such a non-constant, continuous $f(x)$ on $[a,b] \subset \mathbb R$ edited title Apr 23 revised How to define such a non-constant, continuous $f(x)$ on $[a,b] \subset \mathbb R$ added 12 characters in body; edited title Apr 23 asked How to define such a non-constant, continuous $f(x)$ on $[a,b] \subset \mathbb R$ Apr 23 comment partition of a group and cosets @DerekHolt I guess you comment has an typo at the end, "so $P_1 \le Ng$" might be "so $P_1 N \le Ng$"? Apr 22 comment partition of a group and cosets .... so $P_1 N \le Ng$? @DerekHolt Oct 2 awarded Notable Question Aug 29 awarded Popular Question Jul 22 comment Fundamental Theorem of Linear Programming @reuns let's say i got to make a living... Jul 22 asked Fundamental Theorem of Linear Programming Jul 16 asked IMO 2015 problem 2 Jul 10 awarded Popular Question May 18 accepted Why a form is positive only if its matrix in some ordered basis is a positive matrix? May 18 answered Why a form is positive only if its matrix in some ordered basis is a positive matrix?