I can't really imagine how this was approached.(adsbygoogle = window.adsbygoogle || []).push({});

Let [tex] P_{\alpha0} [/tex] fixed

[tex] P_{a0}A=\frac{1}{N!}\sum_{\alpha}\epsilon_{\alpha}P_{\alpha0}P_{\alpha}=\frac{1}{N!}\epsilon_{\alpha0}\sum_{\alpha}\epsilon_{\beta}P_{\beta}=\epsilon_{\alpha0}A

[/tex]

I can understand that [tex] P_{\alpha0}P_{\alpha} = P_{\beta} [/tex] is a new permutation operator.

[tex] P_{a0}A=\frac{1}{N!}\sum_{\alpha}\epsilon_{\alpha}P_{\alpha0}P_{\alpha}=\frac{1}{N!}\sum_{\alpha}\epsilon_{\alpha}P_{\beta} [/tex]

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# Permutation operator

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