Pure Maths Colloquium: The Octagonal PET
28 January 2013 16:00 in CM221
Imagine a wooden puzzle, made from a big polyhedron that can be cut up into "the same" polyhedra and reassembled
in two different ways. Such a puzzle defines what is called a polyhedron exchange transformation, or PET for
short. In my talk, I will explain some of the beautiful properties of PETs and then concentrate on a family of them which I recently studied in a lot of detail. Along the way, I'll explain, in simple terms, an important idea from dynamics, called renormalization.
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