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VW - CVM 1.1 | |
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This image represents a wallpaper function with symmetries in the group pgg'. The horizontal glide (purple line) is a positive symmetry, while the vertical glide (green line) and the half-turn (green dot) are negative (or anti-) symmetries.
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The equation for the function used in this image is:
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![[pgg' wallpaper]](pggpcell.gif)