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in my Book is a formula, namely

sigma^(1) C_2 = sigma^(12)

where sigma^(1) is a reflection about the x-z-plane, C_2 is a pi-rotation about the z-axis and sigma^(12) is a reflection about the midway plane between x-z- and y-z-plane. When i in my Imagination make the steps on the left I come out at a totally different point as where the right-hand side would send me. Obviously I have completely misunderstood the formula and I don't the the sun anymore. Can someone please explain me the meaning of that statement?

Thanks alot

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# Generators D2h

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