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Figure 5
The dodecagonal region of the hyperbolic plane that forms the common preimage for the primitive rhombohedral unit cells of the P, D and G surfaces. The dark and light triangles are [\star{\tt 246}] domains – there are 96 such triangles in the dodecagonal translation unit. The translations that pair opposite sides of the dodecagon generate an irregular (12, 12) tiling of the hyperbolic plane, illustrated to the right. Eleven additional dodecagons (alternating pale and bright blue) meet at each vertex of the central triangulated dodecagon.

ISSN: 2053-2733
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