An Essay in Modal Logic

Content: Edited by Page iii Copyright page Page iv Preface Pages v-vi Georg Henrik Von Wright I Truth-Logic and Modal Logic Pages 1-4 II Some Elements of Truth-Logic. Quantification Pages 5-7 III Alethic Modalities Pages 8-28 IV Epistemic Modalities Pages 29-35 V Deontic Modalities Pages 36-41 VI Combined Modalities Pages 42-56 VII Higher Order Modalities Pages 57-77 Appendix I The Modal Syllogism Pages 78-83 Appendix II The Axiomatic Systems M, M′ , and M″ Pages 84-90 Truth-logic and modal logic Some elements of truth-logic : quantification Alethic modalities Epistemic modalities Deontic modalities Combined modalities Combined modalities Higher order modalities.