CURED - 2015-10-18

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SmokeDetector

13:38

[ SmokeDetector ] Repeating characters in answer: Multiplicative Inverse of a Power Series by sujal on math.stackexchange.com

2 hours later…

Martin Sleziak

15:40

duplicates How would you prove that $\sqrt[n]{2}$ is irrational? and Irrationality of $\sqrt[n]2$

I do not see any strong preference between them.

In both cases the accepted answer is the answer using Fermat's last theorem.

Shall we go by age in the choice of the duplicate target?

Interestingly, this one was closed as a duplicate of a question about square root: Is $n^{th}$ root of $2$ an irrational number?

Daniel Fischer

Why, oh why, do they use that sledgehammer to fasten a screw?

Martin Sleziak

@DanielFischer There are other also other, more serious answer. But it is quite an interesting curiosity.

Daniel Fischer

I opted for the oldest one as the target.

Martin Sleziak

I think it is worth mentioning in such thread. (I think I saw this proof in some big-list post on MO for the first time.)

Although I am surprise to see it as accepted answer. But, well, that's the OPs choice.

@DanielFischer So you suggest to close both questions I listed as duplicates of that one, right?

Daniel Fischer

@MartinSleziak I went ahead and marked them as duplicates already.

Martin Sleziak

15:49

It's is a pity that the one which stays open does not contain the proof based on FLT. :-)

Daniel Fischer

I like a good mosquito-nuking every now and then, but only in jest.

Martin Sleziak

But it is at least mentioned in the comments.

Daniel Fischer

@Max: pretty much the worst way to do this problem... — Qiaochu Yuan Nov 26 '10 at 1:09

Martin Sleziak

@MartinSleziak I am not sure whether this one should be closed. (We can hardly call those questions exact duplicates.) Although the answers there address the more general question. It is probably not worth the fuss. (And probably it is best if it stays this way.)

Daniel Fischer

@MartinSleziak Yes, I've been wondering too.

4 hours later…