Combining Texts

All the ideas for 'Conceptions of Truth', 'Gentzen's Analysis of First-Order Proofs' and 'The Nature of Necessity'

expand these ideas     |    start again     |     specify just one area for these texts

---

7 ideas

2. Reason / D. Definition / 12. Paraphrase

18491

The idea of 'making' can be mere conceptual explanation (like 'because') [Künne]

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

13831

Logic is based on transitions between sentences [Prawitz]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

13825

Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz]

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

13823

In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz]

10. Modality / E. Possible worlds / 1. Possible Worlds / d. Possible worlds actualism

18383

Plantinga says there is just this world, with possibilities expressed in propositions [Plantinga, by Armstrong]

10. Modality / E. Possible worlds / 3. Transworld Objects / b. Rigid designation

11891

Possibilities for an individual can only refer to that individual, in some possible world [Plantinga, by Mackie,P]

28. God / B. Proving God / 2. Proofs of Reason / a. Ontological Proof

20704

A possible world contains a being of maximal greatness - which is existence in all worlds [Plantinga, by Davies,B]