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Parallel Turing machines on four-dimensional input tapes

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Abstract

The parallel Turing machine (PTM) proposed by Wiedermann is a set of identical usual sequential Turing machines (STMs) cooperating on two common tapes: storage tape and input tape. On the other hand, due to the advances in many application areas such as motion picture processing, computer animation, virtual reality systems, and so forth, it has become increasingly apparent that the study of four-dimensional patterns is of crucial importance. Therefore, we think that the study of four-dimensional automata as a computational model of four-dimensional pattern processing is also meaningful. In this article, we propose a four-dimensional parallel Turing machine (4-PTM), and investigate some of its properties based on hardware complexity.

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References

  1. Wiedermann J (1984) Parallel Turing machines. Technical Report RUU-CS-84-11, Department of Computer Science, University of Utrecht, The Netherlands

    Google Scholar 

  2. Ito T (2008) Synchronized alternation and parallelism for three-dimensional automata. PhD Thesis, University of Miyazaki

  3. Okinaka K, Inoue K, Ito A, et al (2002) A note on hardware-bounded parallel Turing machines. Proceedings of the 2nd International Conference on Information, Beijing, China, pp 90–100

  4. Sakurayama S, Inoue K, Takanami I, et al (1983) A note on multihead on-line Turing machines. Tech Rep Yamaguchi Univ 3(2): 183–192

    Google Scholar 

  5. Rosenberg AL (1996) On multihead finite automata. IBM J Res Dev 10:388–394

    Article  Google Scholar 

  6. Yao AC, Rivest RL (1978) k + 1 heads are better than k. J ACM 25(2):337–340

    Article  MATH  MathSciNet  Google Scholar 

  7. Sakamoto M, Inoue K, Takanami I (1994) Three-dimensionally fully space constructible functions. IECE Trans Inf Syst E77-D(6): 723–725

    MathSciNet  Google Scholar 

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Correspondence to Takao Ito.

Additional information

This work was presented in part at the 15th International Symposium on Artificial Life and Robotics, Oita, Japan, February 4–6, 2010

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Ito, T., Sakamoto, M., Taniue, A. et al. Parallel Turing machines on four-dimensional input tapes. Artif Life Robotics 15, 212–215 (2010). https://doi.org/10.1007/s10015-010-0798-3

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  • DOI: https://doi.org/10.1007/s10015-010-0798-3

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