We introduce a temporal logic TAL and prove that it has several nice features. The formalism is a two-dimensional modal system in the sense that formulas of the language are evalua...
Commonsense knowledge often omits the temporal incidence of facts, and even the ordering between occurrences is only available for some of their instances. Reasoning about the temp...
In this paper we present a survey of work relating to the Concurrent METATEM programming language. In addition to a description of the basic Concurrent METATEM system, which incorp...
The consequences of a logic program depend in general upon both the rules of the program and its language. However the consequences of some programs are independent of the choice ...
In many cases, a logic program can be divided into two parts, so that one of them, the \bottom" part, does not refer to the predicates de ned in the \top" part. The \bot...
Using a glass-box theory of finite domain constraints, FD, we show how the entailment of user-defined constraints can be expressed by antimonotone FD constraints. We also provide a...