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. 2022 Feb 22;23(2):407–430. doi: 10.1007/s11047-022-09880-8

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Fig. 10 — Left: an xy-connected y-monotone shape S with a yw-separator (purple). Right: $S_{\times 2}$ , a scaled version of S by a factor two, its traversal $Σ$ (black) by a chain of a Turning Machine $T^{Σ}$ , and the cut $γ$ (purple)