On the expressive power of the shuffle operator matched with intersection by regular sets

Joanna Jȩdrzejowicz; Andrzej Szepietowski

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications (2001)

  • Volume: 35, Issue: 4, page 379-388
  • ISSN: 0988-3754

Abstract

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We investigate the complexity of languages described by some expressions containing shuffle operator and intersection. We show that deciding whether the shuffle of two words has a nonempty intersection with a regular set (or fulfills some regular pattern) is NL-complete. Furthermore we show that the class of languages of the form L R , with a shuffle language L and a regular language R , contains non-semilinear languages and does not form a family of mildly context- sensitive languages.

How to cite

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Jȩdrzejowicz, Joanna, and Szepietowski, Andrzej. "On the expressive power of the shuffle operator matched with intersection by regular sets." RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications 35.4 (2001): 379-388. <http://eudml.org/doc/92672>.

@article{Jȩdrzejowicz2001,
abstract = {We investigate the complexity of languages described by some expressions containing shuffle operator and intersection. We show that deciding whether the shuffle of two words has a nonempty intersection with a regular set (or fulfills some regular pattern) is NL-complete. Furthermore we show that the class of languages of the form $L\cap R$, with a shuffle language $L$ and a regular language $R$, contains non-semilinear languages and does not form a family of mildly context- sensitive languages.},
author = {Jȩdrzejowicz, Joanna, Szepietowski, Andrzej},
journal = {RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications},
keywords = {formal languages; shuffle; space complexity; complexity of languages},
language = {eng},
number = {4},
pages = {379-388},
publisher = {EDP-Sciences},
title = {On the expressive power of the shuffle operator matched with intersection by regular sets},
url = {http://eudml.org/doc/92672},
volume = {35},
year = {2001},
}

TY - JOUR
AU - Jȩdrzejowicz, Joanna
AU - Szepietowski, Andrzej
TI - On the expressive power of the shuffle operator matched with intersection by regular sets
JO - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY - 2001
PB - EDP-Sciences
VL - 35
IS - 4
SP - 379
EP - 388
AB - We investigate the complexity of languages described by some expressions containing shuffle operator and intersection. We show that deciding whether the shuffle of two words has a nonempty intersection with a regular set (or fulfills some regular pattern) is NL-complete. Furthermore we show that the class of languages of the form $L\cap R$, with a shuffle language $L$ and a regular language $R$, contains non-semilinear languages and does not form a family of mildly context- sensitive languages.
LA - eng
KW - formal languages; shuffle; space complexity; complexity of languages
UR - http://eudml.org/doc/92672
ER -

References

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  1. [1] T. Araki and N. Tokura, Flow languages equal recursively enumerable languages. Acta Inform. 15 (1981) 209-217. Zbl0456.68093MR625161
  2. [2] D. Haussler and P. Zeiger, Very special languages and representations of recursively enumerable languages via computation stories. Inform. and Control 47 (1980) 201-212. Zbl0457.68086MR617490
  3. [3] J. Jȩdrzejowicz and A. Szepietowski, Shuffle languages are in P. Theoret. Comput. Sci. 250 (2001) 31-53. Zbl0952.68079MR1795235
  4. [4] C. Martin-Vide and A. Mateescu, Special families of sewing languages, in Workshop – Descriptional complexity of automata, grammars and related structures. Magdeburg (1999) 137-143. Zbl0965.68042
  5. [5] C.H. Papadimitriou, Computational Complexity. Addison-Wesley Publ. Co (1994). Zbl0833.68049MR1251285
  6. [6] A.C. Shaw, Software descriptions with flow expressions. IEEE Trans. Software Engrg. 3 (1978) 242–254. Zbl0381.68035
  7. [7] K. Wagner and G. Wechsung, Computational Complexity. Reidel, Dordrecht, The Netherlands (1986). Zbl0584.68061MR831432
  8. [8] M.K. Warmuth and D. Haussler, On the complexity of iterated shuffle. J. Comput. Syst. Sci. 28 (1984) 345-358. Zbl0549.68039MR752437

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