Combining Texts

All the ideas for 'Conditionals', 'Papers of 1918' and 'On the Elements of Being: I'

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8 ideas

8. Modes of Existence / B. Properties / 13. Tropes / a. Nature of tropes
8508 A 'trope' is an abstract particular, the occurrence of an essence [Williams,DC]
8509 A world is completely constituted by its tropes and their connections [Williams,DC]
8510 'Socrates is wise' means a concurrence sum contains a member of a similarity set [Williams,DC]
10. Modality / B. Possibility / 8. Conditionals / a. Conditionals
13768 Validity can preserve certainty in mathematics, but conditionals about contingents are another matter [Edgington]
10. Modality / B. Possibility / 8. Conditionals / b. Types of conditional
13770 There are many different conditional mental states, and different conditional speech acts [Edgington]
10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals
13764 Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? [Edgington]
13765 'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens [Edgington]
19. Language / D. Propositions / 4. Mental Propositions
22307 Propositions don't name facts, because two opposed propositions can match one fact [Russell]