Combining Texts

All the ideas for 'works', 'Gentzen's Analysis of First-Order Proofs' and 'Existence,Ontological Commitment and Fictions'

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5 ideas

4. Formal Logic / F. Set Theory ST / 8. Critique of Set Theory

8972	What in the real world could ground the distinction between the sets {A,{A,B}} and {B,{A,B}}? [Inwagen]

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]

13. Knowledge Criteria / B. Internal Justification / 3. Evidentialism / b. Evidentialism

6587	It is always wrong to believe things on insufficient evidence [Clifford]