Rigidity of quasicrystallic and Z^γ-circle patterns

Details Rigidity of quasicrystallic and Z^γ-circle patterns Rigidity of quasicrystallic and Z^γ-circle patterns

2010-01-20

arxiv.org/abs/1001.3528v1

Mathematics

Metric Geometry

25 pages, 12 figures, pdfLaTeX

Scientific paper

The uniqueness of the orthogonal Z^\gamma-circle patterns as studied by Bobenko and Agafonov is shown, given the combinatorics and some boundary conditions. Furthermore we study (infinite) rhombic embeddings in the plane which are quasicrystallic, that is they have only finitely many different edge directions. Bicoloring the vertices of the rhombi and adding circles with centers at vertices of one of the colors and radius equal to the edge length leads to isoradial quasicrystallic circle patterns. We prove for a large class of such circle patterns which cover the whole plane that they are uniquely determined up to affine transformations by the combinatorics and the intersection angles. Combining these two results, we obtain the rigidity of large classes of quasicrystallic Z^\gamma-circle patterns.

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