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• ### Recent Forum Posts

#### Re: Determine the cycle decomposition of the permutations

Oh yes, you are right! I used theinverse accidentaly.

So we get the same result using the initial permutation and the cycle decomposition

mathmari February 21st, 2020, 01:43

#### Problem Of The Week #405 Feb 20th, 2020

Here is this week's POTW:

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Let $n$ be the smallest positive integer such that $n$ is divisible by 20, $n^2$ is a perfect

anemone February 20th, 2020, 23:20

#### Re: Problem Of The Week #404 Feb 12th, 2020

Congratulations to [unm]Opalg[/unm] for his correct solution, which you can find below:

From the cosine rule in the triangle $BCD$, BD^2 = BC^2

anemone February 20th, 2020, 23:08

#### Re: Determine the cycle decomposition of the permutations

You wrote (6 12 1) here.

And you wrote (1 12 6) here.
Shouldn't they be the same?

Did

Klaas van Aarsen February 20th, 2020, 20:18

#### Re: Determine the cycle decomposition of the permutations

What do you mean? I got stuck right now.

mathmari February 20th, 2020, 19:24