Abstract
Let ́ > 1 be a nonintegral real number such that the θ-expansion of every positive integer is finite. If the set of θ-expansions of all the positive integers is a context-free language, then θ must be a quadratic Pisot unit.
Original language | English |
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Pages (from-to) | 347-350 |
Number of pages | 4 |
Journal | International Journal of Algebra and Computation |
Volume | 9 |
Issue number | 3-4 |
DOIs | |
State | Published - 1999 |
Externally published | Yes |