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Pattern equivariant functions, deformations and equivalence of tiling spaces

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arxiv math/0703156 v1 pith:NKZ2E2WI submitted 2007-03-06 math.DS

classification math.DS
keywords deformationsfunctionsp-equivariantpatternspacesasymptoticallyclarkclosely
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We reinvestigate the theory of deformations of tilings using P-equivariant cohomology. In particular we relate the notion of asymptotically negligible shape functions introduced by Clark and Sadun to weakly P-equivariant forms. We then investigate more closely the relation between deformations of patterns and homeomorphism or topological conjugacy of pattern spaces.

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  1. Exact renormalisation for patch frequencies in inflation systems

    math.DS 2025-07 conditional novelty 6.0 of 10

    Exact renormalisation equations yield the relative frequency of any patch in a primitive substitution tiling, with transfer to symbolic and other suspension systems.

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