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非整数进位制

非整数进位制是指底数不是正整数进位制。对于一个非正整数的底数β > 1,以下的数值:

而数字di为小于β的非负整数。此进位制可以配合所使用β,称为β进制β展开,后者的名称是数学家Rényi在1957年开始使用[1],而数学家Parry在1960年第一个进行相关的研究[2]。每一个实数至少有一个β进位制的表示方式(也可能是无限多个)。

β进制可以应用在编码理论[3]准晶体模型的描述[4][5]

参考文献

  1. ^ Rényi, Alfréd, Representations for real numbers and their ergodic properties, Acta Mathematica Academiae Scientiarum Hungaricae, 1957, 8 (3–4): 477–493, ISSN 0001-5954, MR 0097374, S2CID 122635654, doi:10.1007/BF02020331, hdl:10338.dmlcz/102491可免费查阅 
  2. ^ Parry, W., On the β-expansions of real numbers, Acta Mathematica Academiae Scientiarum Hungaricae, 1960, 11 (3–4): 401–416, ISSN 0001-5954, MR 0142719, S2CID 116417864, doi:10.1007/bf02020954, hdl:10338.dmlcz/120535可免费查阅 
  3. ^ Kautz, William H., Fibonacci codes for synchronization control, Institute of Electrical and Electronics Engineers. Transactions on Information Theory, 1965, IT–11 (2): 284–292, ISSN 0018-9448, MR 0191744, doi:10.1109/TIT.1965.1053772 
  4. ^ Burdik, Č.; Frougny, Ch.; Gazeau, J. P.; Krejcar, R., Beta-integers as natural counting systems for quasicrystals, Journal of Physics A: Mathematical and General, 1998, 31 (30): 6449–6472, Bibcode:1998JPhA...31.6449B, CiteSeerX 10.1.1.30.5106可免费查阅, ISSN 0305-4470, MR 1644115, doi:10.1088/0305-4470/31/30/011 
  5. ^ Thurston, W.P., Groups, tilings and finite state automata, AMS Colloquium Lectures, 1989 

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非整数进位制
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