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| Main Authors: | , , |
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| 格式: | Preprint |
| 出版: |
2023
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| 主題: | |
| 在線閱讀: | https://arxiv.org/abs/2302.10708 |
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書本目錄:
- For alternate Cantor real base numeration systems we generalize the result of Frougny and~Solomyak on~arithmetics on the set of numbers with finite expansion. We provide a class of alternate bases which satisfy the so-called finiteness property. The proof uses rewriting rules on the~language of~expansions in the corresponding numeration system. The proof is constructive and provides a~method for~performing addition of~expansions in Cantor real bases. We consider a numeration system which is a common generalization of the positional systems introduced by Cantor and Rényi. Number representations are obtained using a composition of $β_k$-transformations for a given sequence of real bases $B=(β_k)_{k\geq 1}$, $β_k>1$. We focus on~arithmetical properties of the set of numbers with finite $B$-expansion in case that $B$ is an alternate base, i.e.\ $B$ is a periodic sequence. We provide necessary conditions for the so-called finiteness property. We further show a~sufficient condition using rewriting rules on the~language of~representations. The proof is constructive and provides a~method for~performing addition of~expansions in alternate bases. Finally, we give a family of alternate bases that satisfy this sufficient condition. Our work generalizes the results of Frougny and Solomyak obtained for the case when the base $B$ is a constant sequence.