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Computation tree logic (CTL) is a subset of CTL* as well as of the modal μ calculus. CTL is also a fragment of Alur, Henzinger and Kupferman's alternating-time temporal logic (ATL). Computation tree logic (CTL) and linear temporal logic (LTL) are both a subset of CTL*.
This treatment of truth-value over time differentiates temporal logic from computational verb logic. Temporal logic always has the ability to reason about a timeline. So-called "linear-time" logics are restricted to this type of reasoning. Branching-time logics, however, can reason about multiple timelines.
Java library implementing Allen's Interval Algebra (incl. data and index structures, e.g., interval tree) OWL-Time Time Ontology in OWL an OWL-2 DL ontology of temporal concepts, for describing the temporal properties of resources in the world or described in Web pages. GQR is a reasoner for Allen's interval algebra (and many others)
This unsorted tree has non-unique values (e.g., the value 2 existing in different nodes, not in a single node only) and is non-binary (only up to two children nodes per parent node in a binary tree). The root node at the top (with the value 2 here), has no parent as it is the highest in the tree hierarchy.
Temporal referential integrity constraints for application time tables Application time tables are queried using regular query syntax or using new temporal predicates for time periods including CONTAINS , OVERLAPS , EQUALS , PRECEDES , SUCCEEDS , IMMEDIATELY PRECEDES and IMMEDIATELY SUCCEEDS (which are modified versions of Allen’s interval ...
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A temporal database stores data relating to time instances. It offers temporal data types and stores information relating to past, present and future time. Temporal databases can be uni-temporal, bi-temporal or tri-temporal. More specifically the temporal aspects usually include valid time, transaction time and/or decision time.
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