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104
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CORR
2010
Springer
143views Education» more  CORR 2010»
15 years 3 months ago
Parikh Images of Regular Languages: Complexity and Applications
We show that the Parikh image of the language of an NFA with n states over an alphabet of size k can be described as a finite union of linear sets with at most k generators and to...
Anthony Widjaja To
108
Voted
FCT
2007
Springer
15 years 9 months ago
On Notions of Regularity for Data Languages
Abstract. Motivated by considerations in XML theory and model checking, data strings have been introduced as an extension of finite alphabet strings which carry, at each position,...
Henrik Björklund, Thomas Schwentick
106
Voted
STOC
2005
ACM
85views Algorithms» more  STOC 2005»
16 years 3 months ago
Tree-walking automata do not recognize all regular languages
Mikolaj Bojanczyk, Thomas Colcombet
100
Voted
CAI
2009
Springer
15 years 10 months ago
Polynomial Operators on Classes of Regular Languages
Ondrej Klíma, Libor Polák