Combining Texts

All the ideas for 'Conditionals', 'Anselm and Actuality' and 'The Method of Truth in Metaphysics'

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

7 ideas

4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic
16456 For modality Lewis rejected boxes and diamonds, preferring worlds, and an index for the actual one [Lewis, by Stalnaker]
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]
16. Persons / A. Concept of a Person / 1. Existence of Persons
4042 Metaphysics requires the idea of people (speakers) located in space and time [Davidson]
19. Language / A. Nature of Meaning / 4. Meaning as Truth-Conditions
4041 Sentences held true determine the meanings of the words they contain [Davidson]