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Aperiodic hierarchical conformal tilings: random at the ends?

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If you have a question about this talk, please contact Mustapha Amrani .

Random Geometry

Co-author: Phil Bowers (Florida State Univ.)

Conformal tilings represent a new chapter in the theory of aperiodic hierarchical tilings, whose most famous example is the Penrose tiling of ‘kites’ and ‘darts’. We move away from tiles with individually rigid euclidean shapes to tiles that are conformally regular and get their rigidity from the global pattern. I will introduce the structure for individual conformal tilings and illustrate with several examples, including the conformal Penrose, snowcube, and pinwheel tilings. At first these might seem quite concrete, but there is profound ambiguity in the long range structure—- indeed, any finite patch can be completed to uncountably many global conformal tilings. In other words, hierarchical tiling families display a type of randomness in their ends.

This talk is part of the Isaac Newton Institute Seminar Series series.

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Dorothy & Thomas Rooms, Strangeways Research Laboratory, Cambridge CB1 8RN CRASSH Room FW11 at the William Gates Building

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