Frontmatter -- PART I: NEGATION IN PHILOSOPHICAL LOGIC -- Generalized Ortho Negation / DUNN, J. MICHAEL -- Order-Duality, Negation and Lattice Representation / HARTONAS, CHRYSAFIS -- Necessary Conditions for Negation Operators / LENZEN, WOLFGANG -- External, Restricted External, and Internal Negations in a Two-Dimensional Logic / MAX, INGOLF -- Negation and Relevance / STELZNER, WERNER -- PART II: NEGATION IN LINGUISTICS -- Categorial Grammars with Negative Information / BUSZKOWSKI, WOJCIECH -- Negative Concord and 'Mode of Judgement' / LADUSAW, WILLIAM A. -- Litotes and Downward Monotonicity / WOUDEN VAN DER, TON -- A Hierarchy of Negative Expressions / ZWARTS, FRANS -- PART III: NEGATION IN ARTIFICIAL INTELLIGENCE -- The Role of Negation in Nonmonotonic Logic and Defeasible Reasoning / SCHURZ, GERHARD -- Belnap's Epistemic States and Negation-as-Failure / WAGNER, GERD -- Index -- Backmatter