Combining Texts

All the ideas for 'In Praed.', 'On the Algebra of Logic' and 'Truth'

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6 ideas

3. Truth / F. Semantic Truth / 1. Tarski's Truth / a. Tarski's truth definition
14965 Truth rests on Elimination ('A' is true → A) and Introduction (A → 'A' is true) [Gupta]
3. Truth / F. Semantic Truth / 2. Semantic Truth
14968 A weakened classical language can contain its own truth predicate [Gupta]
5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox
14964 The Liar reappears, even if one insists on propositions instead of sentences [Gupta]
14969 Strengthened Liar: either this sentence is neither-true-nor-false, or it is not true [Gupta]
9. Objects / B. Unity of Objects / 2. Substance / a. Substance
16776 Substance is an intrinsic thing, so parts of substances can't also be intrinsic things [Duns Scotus]
10. Modality / B. Possibility / 8. Conditionals / d. Non-truthfunction conditionals
14303 Truth-functional conditionals have a simple falsification, when A is true and B is false [Peirce]