1. Preface

   • Ilkka Niiniluoto

   EditorialNotes Pages: 1 - 1

2. Truth, negation, and contradiction

   • G. H. von Wright

   OriginalPaper Pages: 3 - 14

3. A computational interpretation of truth logic

   • R. J. R. Back

   OriginalPaper Pages: 15 - 34

4. Boolean algebra and syllogism

   • V. A. Bocharov

   OriginalPaper Pages: 35 - 54

5. Semantic truth conditionals and relevant calculi

   • E. A. Sidorenko

   OriginalPaper Pages: 55 - 62

6. Paraconsistent structure inside of many-valued logic

   • A. S. Karpenko

   OriginalPaper Pages: 63 - 69

7. Logical relations between theories

   • V. A. Smirnov

   OriginalPaper Pages: 71 - 87

8. ‘Ought’ and ‘Must’

   • Andrew J. I. Jones
   • Ingmar Pörn

   OriginalPaper Pages: 89 - 93

9. Some results on dyadic deontic logic and the logic of preference

   • Lennart Åqvist

   OriginalPaper Pages: 95 - 110

10. Hypothetical imperatives and conditional obligations

    • Ilkka Niiniluoto

    OriginalPaper Pages: 111 - 133

11. Reasoning with defeasible principles

    • Marvin Belzer

    OriginalPaper Pages: 135 - 158

12. Mental anaphora

    • Michael Mckinsey

    OriginalPaper Pages: 159 - 175

13. Applying a logical interpretation of semantic nets and graph grammars to natural language parsing and understanding

    • Eero Hyvönen

    OriginalPaper Pages: 177 - 190

14. Announcement

    Announcement Pages: 191 - 199