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Figure 7
The real space of the two-pixel charge flipping algorithm. The non-convex manifold of fixed points is the union of two half-infinite lines and a quarter-plane. Blue and red arrows correspond to an example of the CF transformation, [(\rho_x,\rho_y) \rightarrow (\rho_x,-\rho_y)], which increases the distance to the manifold.

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ISSN: 2053-2733
Volume 64| Part 1| January 2008| Pages 123-134
https://doi.org/10.1107/S0108767307046028
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