Proximality in Pisot tiling spaces

Marcy Barge, and Beverly Diamond. "Proximality in Pisot tiling spaces." Fundamenta Mathematicae 194.3 (2007): 191-238. <http://eudml.org/doc/283110>.

@article{MarcyBarge2007,
abstract = {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 $_\{φ\}$ has pure discrete spectrum, we describe the collection $^\{P\}_\{φ\}$ of pairs of proximal tilings in $_\{φ\}$ in a natural way as a substitution tiling space. We show that if ψ is another such substitution, then $_\{φ\} $ and $_\{ψ\}$ are homeomorphic if and only if $^\{P\}_\{φ\}$ and $^\{P\}_\{ψ\}$ 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.},
author = {Marcy Barge, Beverly Diamond},
journal = {Fundamenta Mathematicae},
keywords = {substitution; no cycle condition; proximality; balanced pair},
language = {eng},
number = {3},
pages = {191-238},
title = {Proximality in Pisot tiling spaces},
url = {http://eudml.org/doc/283110},
volume = {194},
year = {2007},
}

TY - JOUR
AU - Marcy Barge
AU - Beverly Diamond
TI - Proximality in Pisot tiling spaces
JO - Fundamenta Mathematicae
PY - 2007
VL - 194
IS - 3
SP - 191
EP - 238
AB - 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 $_{φ}$ has pure discrete spectrum, we describe the collection $^{P}_{φ}$ of pairs of proximal tilings in $_{φ}$ in a natural way as a substitution tiling space. We show that if ψ is another such substitution, then $_{φ} $ and $_{ψ}$ are homeomorphic if and only if $^{P}_{φ}$ and $^{P}_{ψ}$ 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.
LA - eng
KW - substitution; no cycle condition; proximality; balanced pair
UR - http://eudml.org/doc/283110
ER -