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2004 | OriginalPaper | Buchkapitel

Fixed Point Logics and Complexity Classes

verfasst von : Prof. Leonid Libkin

Erschienen in: Elements of Finite Model Theory

Verlag: Springer Berlin Heidelberg

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Most logics we have seen so far are not well suited for expressing many tractable graph properties, such as graph connectivity, reachability, and so on. The limited expressiveness of FO and counting logics is due to the fact that they lack mechanisms for expressing fixed point computations. Other logics we have seen, such as MSO, ∃SO, and ∀SO, can express intractable graph properties.

Metadaten
Titel
Fixed Point Logics and Complexity Classes
verfasst von
Prof. Leonid Libkin
Copyright-Jahr
2004
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-662-07003-1_10