s-convexity, model sets and their relation

Details s-convexity, model sets and their relation s-convexity, model sets and their relation

1999-07-08

arxiv.org/abs/math/9907054v1

Mathematics

Rings and Algebras

Scientific paper

The relation of s-convexity and sets modeling physical quasicrystals is explained for quasicrystals related to quadratic unitary Pisot numbers. We show that 1-dimensional model sets may be characterized by s-convexity for finite set of parameters s. It is shown that the three Pisot numbers $\frac12(1+\sqrt5)$, $1+\sqrt2$, and $2+\sqrt3$ related to experimentally observed non-crystallographic symmetries are exceptional with respect to s-convexity.

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