We consider the sequence of fractional parts $\lbrace \xi \alpha ^n\rbrace $, $n=1,2,3,\dots $, where $\alpha >1$ is a Pisot number and $\xi \in {\mathbb Q}(\alpha )$ is a positive number. We find the set of limit points of this sequence and describe all cases when it has a unique limit point. The case, where $\xi =1$ and the unique limit point is zero, was earlier described by the author and Luca, independently.
@article{107991, author = {Art\=uras Dubickas}, title = {On the limit points of the fractional parts of powers of Pisot numbers}, journal = {Archivum Mathematicum}, volume = {042}, year = {2006}, pages = {151-158}, zbl = {1164.11026}, mrnumber = {2240352}, language = {en}, url = {http://dml.mathdoc.fr/item/107991} }
Dubickas, Artūras. On the limit points of the fractional parts of powers of Pisot numbers. Archivum Mathematicum, Tome 042 (2006) pp. 151-158. http://gdmltest.u-ga.fr/item/107991/
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