InforLorV4, Main, Merge, bibRecord, 00BD47

Rigid Reachability

Identifieur interne : 00BD47 ( Main/Merge ); précédent : 00BD46; suivant : 00BD48

Rigid Reachability

Auteurs : Harald Ganzinger ; Florent Jacquemard [France] ; Margus Veanes

Source :

RBID : Hal:inria-00098741

Descripteurs français

mix :
- accessibilité., reachability., rigid unification, réécriture de termes, second order unification, term rewriting, unification du second ordre, unification rigide.

English descriptors

mix :
- accessibilité.

Abstract

We show that rigid reachability, the non-symmetric form of rigid E-unification, is undecidable already in the case of a single constraint. From this we infer the undecidability of a new rather restricted kind of second-order unification. We also show that certain decidable subclasses of the problem which are PTIME-complete in the equational case become EXPTIME-complete when symmetry is absent. By applying automata-theoretic methods, simultaneous monadic rigid reachability with ground rules is shown to be in EXPTIME.

Url:

https://hal.inria.fr/inria-00098741

Links toward previous steps (curation, corpus...)

to stream Hal, to step Corpus: 004226
to stream Hal, to step Curation: 004226
to stream Hal, to step Checkpoint: 006910

Links to Exploration step

Hal:inria-00098741

Le document en format XML

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Rigid Reachability

Rigid Reachability

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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