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Complexity of syntactical tree fragments of Independence-Friendly logic
[article]
2019
arXiv
pre-print
A dichotomy result of Sevenster (2014) completely classified the quantifier prefixes of regular Independence-Friendly (IF) logic according to the patterns of quantifier dependence they contain. On one hand, prefixes that contain "Henkin" or "signalling" patterns were shown to characterize fragments of IF logic that capture NP-complete problems; all the remaining prefixes were shown instead to be essentially first-order. In the present paper we develop the machinery which is needed in order to
arXiv:1610.03406v2
fatcat:gzeyfif2arghrhn7fjnjtxnkeu