We consider μ-calculus formulas in a normal form: after a prefix of fixed-point quantifiers follows a quantifier-free expression. We are interested in the problem of evaluating (model checking) such formulas in a powerset lattice. We assume that the quantifier-free part of the expression can be any monotone function given by a black-box - we may only ask for its value for given arguments. As a first result we prove that when the lattice is fixed, the problem becomes polynomial (the assumption about the quantifier-free part strengthens this result). As a second result we show that any algorithm solving the problem has to ask at least about n2 (namely Ω(n2/log n)) queries to the function, even when the expression consists of one μ and one ν (the assumption about the quantifier-free part weakens this result).
@article{ITA_2013__47_1_97_0,
author = {Parys, Pawe\l },
title = {Some results on complexity of $\mu $-calculus evaluation in the black-box model},
journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
volume = {47},
year = {2013},
pages = {97-109},
doi = {10.1051/ita/2012030},
zbl = {1269.68056},
language = {en},
url = {http://dml.mathdoc.fr/item/ITA_2013__47_1_97_0}
}
Parys, Paweł. Some results on complexity of $\mu $-calculus evaluation in the black-box model. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 47 (2013) pp. 97-109. doi : 10.1051/ita/2012030. http://gdmltest.u-ga.fr/item/ITA_2013__47_1_97_0/
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