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Weakly Unambiguous Morphisms with Respect to Sets of Patterns with Constants

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Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 8079))

Abstract

A non-erasing morphism is weakly unambiguous with respect to a pattern if no other non-erasing morphism maps the pattern to the same image. If the size of the target alphabet is at least three, then the patterns for which there exists a length-increasing weakly unambiguous morphism can be characterized using the concept of loyal neighbors of variables. In this article this characterization is generalized for patterns with constants. Two different generalizations are given for sets of patterns.

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References

  1. Berstel, J., Perrin, D., Reutenauer, C.: Codes and Automata. Cambridge University Press (2010)

    Google Scholar 

  2. Freydenberger, D., Nevisi, H., Reidenbach, D.: Weakly unambiguous morphisms. Theoret. Comput. Sci. 448, 21–40 (2012)

    Article  MathSciNet  MATH  Google Scholar 

  3. Freydenberger, D., Reidenbach, D.: The unambiguity of segmented morphisms. Discrete Appl. Math. 157(14), 3055–3068 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  4. Freydenberger, D., Reidenbach, D., Schneider, J.: Unambiguous morphic images of strings. Internat. J. Found. Comput. Sci. 17(3), 601–628 (2006)

    Article  MathSciNet  MATH  Google Scholar 

  5. Harju, T., Karhumäki, J.: Morphisms. In: Rozenberg, G., Salomaa, A. (eds.) Handbook of Formal Languages, vol. 1, pp. 439–510. Springer (1997)

    Google Scholar 

  6. Head, T.: Fixed languages and the adult languages of 0L schemes. Int. J. Comput. Math. 10(2), 103–107 (1981)

    Article  MathSciNet  MATH  Google Scholar 

  7. Mateescu, A., Salomaa, A.: Aspects of classical language theory. In: Rozenberg, G., Salomaa, A. (eds.) Handbook of Formal Languages, vol. 1, pp. 175–251. Springer (1997)

    Google Scholar 

  8. Reidenbach, D.: Discontinuities in pattern inference. Theoret. Comput. Sci. 397(1-3), 166–193 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  9. Reidenbach, D., Schneider, J.: Restricted ambiguity of erasing morphisms. Theoret. Comput. Sci. 412(29), 3510–3523 (2011)

    Article  MathSciNet  MATH  Google Scholar 

  10. Schneider, J.: Unambiguous erasing morphisms in free monoids. RAIRO Inform. Theor. Appl. 44(2), 193–208 (2010)

    Article  MATH  Google Scholar 

  11. Shallit, J., Wang, M.W.: On two-sided infinite fixed points of morphisms. Theoret. Comput. Sci. 270(1-2), 659–675 (2002)

    Article  MathSciNet  MATH  Google Scholar 

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Saarela, A. (2013). Weakly Unambiguous Morphisms with Respect to Sets of Patterns with Constants. In: Karhumäki, J., Lepistö, A., Zamboni, L. (eds) Combinatorics on Words. Lecture Notes in Computer Science, vol 8079. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40579-2_24

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  • DOI: https://doi.org/10.1007/978-3-642-40579-2_24

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-40578-5

  • Online ISBN: 978-3-642-40579-2

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