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k-Band-Simulation von k-Kopf-Turing-Maschinen

k-Tape simulation of k-head Turing machines

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Zusammenfassung

Es werdenTuring-Maschinen mitk unabhängigen Lese-Schreib-Köpfen auf einem Band undTuring-Maschinen mit je einem Kopf aufk Bändern betrachtet. Es wird gezeigt, daß sich ohne Verändern der Rechenzeit jede Maschine von einem Typ durch eine Maschine vom andern Typ simulieren läßt. Daraus wird gefolgert, daß es für die Rechengeschwindigkeit vonTuring-Maschinen nur auf die Zahl der Köpfe, nicht aber auf deren Verteilung auf einzelne Bänder ankommt.

Summary

k-headTuring machines can be simulated byk-tape machines and vice versa. (k-head means:k independent heads on one tape.k-tape means:k tapes each with one head). We show that the simulation can be done without changing the computation time. From this one concludes that the speed of aTuring machine might depend only on the number of heads and that it does not depend on the distribution of heads on the different tapes.

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Literatur

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  2. Hennie, F. C.: One-Tape, Off-LineTuring Machine Computations. Information and Control8, 553–578 (1965).

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Stoß, HJ. k-Band-Simulation von k-Kopf-Turing-Maschinen. Computing 6, 309–317 (1970). https://doi.org/10.1007/BF02238815

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  • DOI: https://doi.org/10.1007/BF02238815