Title
Equivalence of deterministic one-counter automata is NL-complete
Abstract
We prove that language equivalence of deterministic one-counter automata is NL-complete. This improves the superpolynomial time complexity upper bound shown by Valiant and Paterson in 1975. Our main contribution is to prove that two deterministic one-counter automata are inequivalent if and only if they can be distinguished by a word of length polynomial in the size of the two input automata.
Year
DOI
Venue
2013
10.1145/2488608.2488626
symposium on the theory of computing
Keywords
DocType
Volume
superpolynomial time complexity,main contribution,language equivalence,deterministic one-counter automaton,length polynomial,input automaton,computational complexity
Conference
abs/1301.2181
Citations 
PageRank 
References 
12
0.54
21
Authors
3
Name
Order
Citations
PageRank
Stanislav Böhm1508.69
Stefan Göller214815.10
Petr Jančar331520.84