"3171","The Liar and Related Paradoxes:Fuzzy Truth Value Assignment for Collections of Self-Referential Sentences","We study self-referential sentences of the type related to the Liar paradox. In particular, we consider the problem of assigning consistent fuzzy truth values to collections of self-referential sentences. We show that the problem can be reduced to the solution of a system of nonlinear equations. Furthermore, we prove that, under mild conditions, such a system always has a solution (i.e. a consistent truth value assignment) and that, for a particular implementation of logical ``and'', ``or'' and ``negation'', the ``mid-point'' solution is always consistent. Next we turn to computational issues and present several truth-value assignment algorithms; we argue that these algorithms can  be understood as generalized sequential reasoning. In an Appendix we present a large number of examples of self-referential collections (including the Liar and the strengthened Liar), we formulate the corresponding truth value equations and solve them analytically and/ or numerically.","http://cogprints.org/3171/","Vezerides, Kostis and Kehagias, Dr. Athanasios","UNSPECIFIED","       <span class=\"person_name\">Vezerides, Kostis</span> and <span class=\"person_name\">Kehagias, Dr. Athanasios</span>     (2003)  <a href=\"http://cogprints.org/3171/\"><em>The Liar and Related Paradoxes:Fuzzy Truth Value Assignment for Collections of Self-Referential Sentences.</em></a>       [Preprint]           ",",kehagiat","2003-09"