Infinite-game semantics for logic programming languages
Abstract
This thesis focuses on the study of the semantics of logic programs and the development of infinite games of perfect information between two players that capture this semantics. Initially, we study propositional logic programming. In [M.H. van Emden, Quantitative deduction and its fixpoint theory, Journal of Logic Programming 3 (1) (1986) 37-53] a game between two players is described. In this, given a propositional logic program without negation and a ground atom that belongs to the program, Player I, tries to prove that the atomic formula is true (he therefore has the role of the Believer), and the other that it is not (he therefore has the role of the Doubter). So the goal, succeeds as a result of a query to the program, if Player I has a winning strategy. In this thesis, the game is extended to capture the semantics of programs with negation. When during the game a negated atom appears, the two players switch roles. The Believer becomes Doubter and vice versa. In case of infinit ...
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