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This paper looks at logic programming with three kinds of negation: default, weak and strict negations. A 3-valued logic model theory is discussed for logic programs with three kinds of negation. The procedure is constructed for negations so that a soundness of the procedure is guaranteed in terms of 3-valued logic model theory.
negation in logic programming
Digital Object Identifier:10.1017/S1471068406002791
Published with permission from the copyright holder. This is the institute's copy, as published in Theory and Practice of Logic Programming, Nov 2006, Vol. 6, Issue 6, Pages 737-749.
Copyright © 2006 Cambridge University Press. All rights reserved.
Theory and Practice of Logic Programming