In 1978, Courcelle asked for a complete set of axioms and rules for the equational theory of (discrete regular) words equipped with the operations of product, omega power and omega-op power. In this paper we find a simple set of equations and prove they are complete. Moreover, we show that the equational theory is decidable in polynomial time.
@article{ITA_2004__38_1_3_0, author = {Bloom, Stephen L. and \'Esik, Zolt\'an}, title = {Axiomatizing omega and omega-op powers of words}, journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications}, pages = {3--17}, publisher = {EDP-Sciences}, volume = {38}, number = {1}, year = {2004}, doi = {10.1051/ita:2004005}, mrnumber = {2059025}, zbl = {1082.68070}, language = {en}, url = {https://www.numdam.org/articles/10.1051/ita:2004005/} }
TY - JOUR AU - Bloom, Stephen L. AU - Ésik, Zoltán TI - Axiomatizing omega and omega-op powers of words JO - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications PY - 2004 SP - 3 EP - 17 VL - 38 IS - 1 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/ita:2004005/ DO - 10.1051/ita:2004005 LA - en ID - ITA_2004__38_1_3_0 ER -
%0 Journal Article %A Bloom, Stephen L. %A Ésik, Zoltán %T Axiomatizing omega and omega-op powers of words %J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications %D 2004 %P 3-17 %V 38 %N 1 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/ita:2004005/ %R 10.1051/ita:2004005 %G en %F ITA_2004__38_1_3_0
Bloom, Stephen L.; Ésik, Zoltán. Axiomatizing omega and omega-op powers of words. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 38 (2004) no. 1, pp. 3-17. doi : 10.1051/ita:2004005. https://www.numdam.org/articles/10.1051/ita:2004005/
[1] Finite automata and ordinals. Theoret. Comput. Sci. 156 (1996) 119-144. | MR | Zbl
,[2] An Eilenberg theorem for words on countable ordinals, in Latin'98: Theoretical Informatics, edited by C.L. Lucchesi and A.V. Moura. Lect. Notes Comput. Sci. 1380 (1998) 53-64. | Zbl
and ,
[3] Long words: the theory of concatenation and
[4] Iteration Theories. Springer (1993). | MR | Zbl
and ,[5] Deciding whether the frontier of a regular tree is scattered. Fundamenta Informaticae 55 (2003) 1-21. | MR | Zbl
and ,[6] Automata on linear orderings, in Proc. Mathematical Foundations of Computer Science. Lect. Notes Comput. Sci. 2136 (2001) 236-247. | MR | Zbl
and ,[7] Hierarchy among automata on linear orderings, in Foundation of Information Technology in the Era of Network and Mobile Computing, Proc. TCS 2002. Kluwer Academic Publishers (2002) 107-118. | MR | Zbl
and ,[8] On a decision method in restricted second-order arithmetic, in Int. Congress Logic, Methodology, and Philosophy of Science, Berkeley, 1960. Stanford University Press (1962) 1-11. | MR
,[9] Transfinite automata recursions and weak second order theory of ordinals, in Int. Congress Logic, Methodology, and Philosophy of Science, Jerusalem, 1964. North Holland (1965) 2-23. | MR | Zbl
,
[10] Finite automata, definable sets, and regular expressions over
[11] Frontiers of infinite trees. RAIRO: Theoret. Informatics Appl./Theor. Comput. Sci. 12 (1978) 319-337. | Numdam | MR | Zbl
,[12] Equational properties of iteration in algebraically complete categories. Theoret. Comput. Sci. 195 (1998) 61-89. | MR | Zbl
and ,[13] An algorithm for the solution of fixed-point equations for infinite words. RAIRO: Theoret. Informatics Appl. 14 (1980) 131-141. | Numdam | MR | Zbl
,[14] Linear Orderings. Academic Press, New York (1982). | MR | Zbl
,[15] On frontiers of regular trees. RAIRO: Theoret. Informatics Appl. 20 (1986) 371-381. | Numdam | MR | Zbl
,[16] An algebraic theory for regular languages of finite and infinite words. Int. J. Algebra Comput. 3 (1993) 447-489. | MR | Zbl
,[17] Finite automata on transfinite sequences and regular expressions. Fundamenta Informaticae 8 (1985) 379-396. | MR | Zbl
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- Context-Free Languages of Countable Words, Theoretical Aspects of Computing - ICTAC 2009, Volume 5684 (2009), p. 185 | DOI:10.1007/978-3-642-03466-4_12
- Regular and Algebraic Words and Ordinals, Algebra and Coalgebra in Computer Science, Volume 4624 (2007), p. 1 | DOI:10.1007/978-3-540-73859-6_1
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