Abstract
We consider forgetting automata, i.e., linear bounded automata which can only use the operations ‘move’, ‘erase’ (rewrite with a blank symbol) and ‘delete’ (remove completely). A classification of the families of languages corresponding to the possible combinations of operations has been given in [1], here we address some of the problems left open. Furthermore the unary case is being investigated.
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Jančar, P., Mráz, F., Plátek, M.: A taxonomy of forgetting automata. In: Borzyszkowski, A.M., Sokolowski, S. (eds.) MFCS 1993. LNCS, vol. 711, pp. 527–536. Springer, Heidelberg (1993)
Jančar, P., Mráz, F., Plátek, M.: Characterization of context-free languages by erasing automata. In: Havel, I.M., Koubek, V. (eds.) MFCS 1992. LNCS, vol. 629, pp. 305–314. Springer, Heidelberg (1992)
Mráz, F., Plátek, M.: Erasing automata recognize more than context-free languages. Acta Mathematica et Informatica Universitatis Ostraviensis 3, 77–85 (1995)
von Braunmühl, B., Verbeek, R.: Finite change automata. In: Weihrauch, K. (ed.) GI-TCS 1979. LNCS, vol. 67, pp. 91–100. Springer, Heidelberg (1979)
Plátek, M., Vogel, J.: Deterministic list automata and erasing graphs. The Prague bulletin of mathematical linguistics 45, 27–50 (1986)
Chytil, M.P., Plátek, M., Vogel, J.: A note on the Chomsky hierarchy. Bulletin of the EATCS 27, 23–30 (1985)
Jančar, P., Mráz, F., Plátek, M.: Forgetting automata and context-free languages. Acta Informatica 33, 409–420 (1996)
Jančar, P.: Nondeterministic forgetting automata are less powerful than deterministic linear bounded automata. Acta Mathematica et Informatica Universitatis Ostraviensis 1, 67–74 (1993)
Jančar, P., Mráz, F., Plátek, M.: Forgetting automata and the Chomsky hierarchy. In: Proc. SOFSEM 1992, pp. 41–44 (1992)
Greibach, S.A.: Erasable context-free languages. Information and Control 29, 301–326 (1975)
Monien, B.: Two-way multihead automata over a one-letter alphabet. RAIRO – Theoretical Informatics and Applications 14, 67–82 (1980)
Ibarra, O.H., Trân, N.Q.: A note on simple programs with two variables. Theoretical Computer Science 112, 391–397 (1993)
Mráz, F., Plátek, M.: A remark about forgetting automata. In: Proc. SOFSEM 1993, pp. 63–66 (1993)
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Glöckler, J. (2006). Forgetting Automata and Unary Languages. In: Ibarra, O.H., Yen, HC. (eds) Implementation and Application of Automata. CIAA 2006. Lecture Notes in Computer Science, vol 4094. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11812128_18
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DOI: https://doi.org/10.1007/11812128_18
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