(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have problems understanding part(f)of the following worked example:

[PLAIN]http://img7.imageshack.us/img7/5557/61793282.gif [Broken]

3. The attempt at a solution

So in part (f), when calculating [tex](\sigma \tau)^{9000}[/tex], how does [tex](\sigma \tau)^{818 \times 11} (\sigma \tau)^2[/tex] reduce to [tex](\sigma \tau)^2[/tex]? What happens to the [tex](\sigma \tau)^{818 \times 11}[/tex] part?

Similarly in [tex](\sigma \tau)^{-21}=(\sigma \tau)^{-2 \times 11} (\sigma \tau)^1 = (\sigma \tau)^1[/tex]

why has the "[tex](\sigma \tau)^{-2 \times 11}[/tex]" been omitted?

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# Homework Help: Permutation Group

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