Proximality in Pisot tiling spaces

• Autorzy: Marcy Barge , Beverly Diamond
• Języki publikacji: EN

Abstrakty

EN

A substitution φ is strong Pisot if its abelianization matrix is nonsingular and all eigenvalues except the Perron-Frobenius eigenvalue have modulus less than one. For strong Pisot φ that satisfies a no cycle condition and for which the translation flow on the tiling space $𝓣_{φ}$ has pure discrete spectrum, we describe the collection $𝓣^{P}_{φ}$ of pairs of proximal tilings in $𝓣_{φ}$ in a natural way as a substitution tiling space. We show that if ψ is another such substitution, then $𝓣_{φ} $ and $𝓣_{ψ}$ are homeomorphic if and only if $𝓣^{P}_{φ}$ and $𝓣^{P}_{ψ}$ are homeomorphic. We make use of this invariant to distinguish tiling spaces for which other known invariants are ineffective. In addition, we show that for strong Pisot substitutions, pure discrete spectrum of the flow on the associated tiling space is equivalent to proximality being a closed relation on the tiling space.

Kategorie tematyczne

• 54H20: Topological dynamics
• 37A30: Ergodic theorems, spectral theory, Markov operators
• 37B50: Multi-dimensional shifts of finite type, tiling dynamics
• 37B05: Transformations and group actions with special properties (minimality, distality, proximality, etc.)

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Fundamenta Mathematicae
• Rocznik: 2007
• Tom: 194
• Numer: 3
• Strony: 191-238

Daty

wydano

2007

Twórcy

autor

Marcy Barge

• Department of Mathematics, Montana State University, Bozeman, MT 59717, U.S.A.

autor

Beverly Diamond

• Department of Mathematics, College of Charleston, Charleston, SC 29424, U.S.A.

Identyfikatory

DOI

10.4064/fm194-3-1