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Full-Text Articles in Physical Sciences and Mathematics
Positive Dependency Graphs Revisited, Jorge Fandinno, Vladimir Lifschitz
Positive Dependency Graphs Revisited, Jorge Fandinno, Vladimir Lifschitz
Computer Science Faculty Publications
Theory of stable models is the mathematical basis of answer set programming. Several results in that theory refer to the concept of the positive dependency graph of a logic program. We describe a modification of that concept and show that the new understanding of positive dependency makes it possible to strengthen some of these results.