CFP last date
22 April 2024
Call for Paper
May Edition
IJCA solicits high quality original research papers for the upcoming May edition of the journal. The last date of research paper submission is 22 April 2024

Submit your paper
Know more
Reseach Article

Closure Properties of Prefix-free Regular Languages

by Meenu Lochan, Sunita Garhwal, Ajay Kumar
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 52 - Number 8
Year of Publication: 2012
Authors: Meenu Lochan, Sunita Garhwal, Ajay Kumar
10.5120/8220-1645

Meenu Lochan, Sunita Garhwal, Ajay Kumar . Closure Properties of Prefix-free Regular Languages. International Journal of Computer Applications. 52, 8 ( August 2012), 6-9. DOI=10.5120/8220-1645

@article{ 10.5120/8220-1645,
author = { Meenu Lochan, Sunita Garhwal, Ajay Kumar },
title = { Closure Properties of Prefix-free Regular Languages },
journal = { International Journal of Computer Applications },
issue_date = { August 2012 },
volume = { 52 },
number = { 8 },
month = { August },
year = { 2012 },
issn = { 0975-8887 },
pages = { 6-9 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume52/number8/8220-1645/ },
doi = { 10.5120/8220-1645 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:51:43.546560+05:30
%A Meenu Lochan
%A Sunita Garhwal
%A Ajay Kumar
%T Closure Properties of Prefix-free Regular Languages
%J International Journal of Computer Applications
%@ 0975-8887
%V 52
%N 8
%P 6-9
%D 2012
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Regular languages are closed under union, intersection, complementation, Kleene-closure and reversal operations. Regular languages can be classified into infix-free, prefix- free and suffix-free. In this paper various closure properties of prefix-free regular languages are investigated and result shows that prefix-free regular languages are closed under union and concatenation. Under complementation, reverse, Kleene-closure and intersection operations prefix-free regular languages are not closed.

References
  1. Han Y. S. , Salomaa K. , Wood D. , 2007, " State complexity of Prefix-free Regular Languages", HKUST Theoretical Computer Science Center Research Report HKUST-TCSC-2006-02.
  2. Han Y. S. , Salomaa K, 2009, "State complexity of basic operations on suffix-free regular languages", Theoretical Computer Science 410, 2537-2548.
  3. Han Y. S. , Wang Y. , Wood D. , 2005, "Prefix-Free Regular-expression Matching" Springer-Verlag Berlin Heidelberg, LNCS 3537, 298-309.
  4. Han Y. S. , Wood D. , 2007, "Outfix-free Regular Languages and Prime Outfix-free decomposition", Fundamenta Informaticae XX, 1-17.
  5. Han Y. S. ,Wood D. , " Overlap-free Regular Languages", Springer-Verlag, LNCS 4112, Berlin Heidelberg, COCOON 2006, 469-478.
  6. Kari J. , 2011, "Automata and formal languages", University of Turku.
  7. Mishra K. L. P. and N. Chandrasekaran, 1998, "Theory of Computer Science (Automata Language and. Computation) ", PHI, Second edition.
  8. Peter Linz, 2009, "An Introduction to Formal Languages and Automata", Narosa publishers, fourth edition.
  9. Sheng Yu, 2001, "State Complexity of Regular Languages", Journal of automata, Languages and Combinatorics, 6(2).
  10. Ullman, J. , J. E. Hopcroft and R. Motwani, 2001, "Introduction to Automata Theory, Languages, and Computation", Pearson Education Inc.
Index Terms

Computer Science
Information Sciences

Keywords

Regular expressions State complexity Prefix-free