Refinement semantics is an alternative to least fixpoint semantics that is more useful for programming. From it we derive a variety of rules for w h i l e-loops, for-loops, and loo...
The paper presents a constructive 3-valued semantics for autoepistemic logic (AEL). We introduce a derivation operator and de ne the semantics as its least xpoint. The semantics is...
Marc Denecker, V. Wiktor Marek, Miroslaw Truszczyn...
We present a framework for defining abstract interpreters for liveness properties, in particular program termination. The framework makes use of the theory of metric spaces to defi...
This paper describes the LDL++ system and the research advances that have enabled its design and development. We begin by discussing the new nonmonotonic and nondeterministic cons...
Cyclic definitions in description logics have until now been investigated only for description logics allowing for value restrictions. Even for the most basic language which allow...