# bwkaplan

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bio website location the virgo supercluster age member for 3 years, 7 months seen Jul 27 at 19:50 profile views 98

# 69 Actions

 Dec23 asked Prove the determinants of these related matrices are zero. Dec16 awarded Popular Question Dec15 comment Prove $2^{1/3}$ is irrational. @missingno, I didn't. I assumed $2^{1/2}$ was irrational; my intention was to prove $2^{1/3}$ was irrational. Surely you can see the difference now. Dec15 awarded Nice Question Dec14 accepted Prove $2^{1/3}$ is irrational. Dec14 comment Prove $2^{1/3}$ is irrational. @JackManey, I like this proof because it reduces the possibilities to a small number (four) of cases that can be checked to see if they are zeros of the polynomial. I'll give this question some time, but this'll probably be the answer I accept. Dec14 comment Prove $2^{1/3}$ is irrational. you're right, as I noted in the comments to the OP. I would argue on philosophical grounds that a proof by contradiction isn't as strong as another that is constructed, but that is not a mathematical objection, so I'll let it lie... Dec14 awarded Commentator Dec14 comment Prove $2^{1/3}$ is irrational. @DidierPiau, I suppose any given irrational number divided by itself is 1, which is rational. hmmph. I'll take another crack at it with gcd algorithm tonight. Dec14 asked Prove $2^{1/3}$ is irrational. Nov17 comment Can the symmetric group $S_n$ be imbedded as a subgroup in $A_{2n+1}$? @ArturoMagidin, Fixed. Nov17 revised Can the symmetric group $S_n$ be imbedded as a subgroup in $A_{2n+1}$? edited title Nov17 comment Can the symmetric group $S_n$ be imbedded as a subgroup in $A_{2n+1}$? @ArturoMagidin, I am more interested in the $A_{2n+1}$ groups, with the first one e.g. $A_{n+1}$ being a special case. See the last paragraph. Anyway, I'm going off to recalculate the parity again and will be back if I have any more questions. thanks again! Nov17 revised Can the symmetric group $S_n$ be imbedded as a subgroup in $A_{2n+1}$? edited title Nov17 asked Can the symmetric group $S_n$ be imbedded as a subgroup in $A_{2n+1}$? Nov2 comment Prove that symmetric groups are associative. yes, you caught me second-guessing myself. Nov1 awarded Student Nov1 asked Prove that symmetric groups are associative. Sep15 awarded Scholar Sep15 accepted Prove that every element of a finite group has an order