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Cubic Pisot units with nite beta Shigeki Akiyama
 

Summary: [Page 1]
Cubic Pisot units with nite beta
expansions
Shigeki Akiyama
Abstract. Cubic Pisot units with nite beta expansion property are classi ed (Theorem
3). The results of [6] and [3] are well combined to complete its proof. Further, it is noted
that the above niteness property is equivalent to an important problem of fractal tiling
generated by Pisot numbers.
1991 Mathematics Subject Classi cation: 11K26,11A63,11Q15,28A80
1. Introduction and the results
Let > 1 be a xed real number. Any positive real x is expanded as:
x =
1
X
i=N0
a i i = a N0 N0 + a N0 1 N0 1 +   
with a i 2 Z\ [0; ). Here we assume the 'greedy condition':
x
N
X

  

Source: Akiyama, Shigeki - Department of Mathematics, Niigata University

 

Collections: Mathematics