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» Two-way unary temporal logic over trees
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LICS
2005
IEEE
14 years 14 days ago
Temporal Logics over Unranked Trees
We consider unranked trees, that have become an active subject of study recently due to XML applications, and characterize commonly used fragments of firstorder (FO) and monadic ...
Pablo Barceló, Leonid Libkin
IANDC
2007
66views more  IANDC 2007»
13 years 6 months ago
Quantitative temporal logics over the reals: PSpace and below
In many cases, the addition of metric operators to qualitative temporal logics (TLs) increases the complexity of satisfiability by at least one exponential: while common qualitat...
Carsten Lutz, Dirk Walther, Frank Wolter
ICDT
2007
ACM
97views Database» more  ICDT 2007»
14 years 1 months ago
Combining Temporal Logics for Querying XML Documents
Close relationships between XML navigation and temporal logics have been discovered recently, in particular between logics LTL and CTL⋆ and XPath navigation, and between the µ-c...
Marcelo Arenas, Pablo Barceló, Leonid Libki...
JAPLL
2010
124views more  JAPLL 2010»
13 years 5 months ago
Reasoning about XML with temporal logics and automata
We show that problems arising in static analysis of XML specifications and transformations can be dealt with using techniques similar to those developed for static analysis of pr...
Leonid Libkin, Cristina Sirangelo