Edgington's treatment of indicative conditionals

23 Abril 2026, 11:00 • Ricardo Santos

Edgington's treatment of indicative conditionals. Comparison of Edgington with Grice. Probabilistic validity. David Lewis's theorem that conditional probability is not the probability of a proposition. Comparisons of Material conditional, Stalnaker's indicative conditionals, and Edgington indicative conditionals. Introduction of McGee's counterexamples to modus ponens. (Lecturer: Nicholas Ferenz.)

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Relevant logic and its application

21 Abril 2026, 11:00 • Ricardo Santos

Variable sharing property. Brief history of relevant logic. Situation-based ternary relational semantics for the positive fragment of relevant logic. Application of relevant logic. Edgington's argument that conditionals do not have truth values. Initial statement of Edgington's positive view. (Lecturer: Nicholas Ferenz.)

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Conditionals, robustness and restrictors

16 Abril 2026, 11:00 • Ricardo Santos

Review of Stalnaker's indicative conditional. Application of Stalnaker's indicative conditional (Butler and fatalism arguments). Conditional Probability. Frank Jackson on conditionals and Robustness. Lewis and Kratzer on restrictors. Variable sharing property in Relevant Logic. (Lecturer: Nicholas Ferenz.)

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Models for Stalnaker's counterfactual and indicative conditionals

14 Abril 2026, 11:00 • Ricardo Santos

Possible worlds (à la Stalnaker) and UCLA propositions. Models for Stalnaker's counterfactual and indicative conditionals. Objections and replies to Stalnaker's models. Stalnaker on the difference between entailment and reasonable inference. Idea that counterfactuals and indicatives might not have truth values. (Lecturer: Nicholas Ferenz.)

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Strict conditionals and FDE

9 Abril 2026, 11:00 • Ricardo Santos

Review of Strict Conditional on S5. Strict conditional on modal logic T. Paradoxes of strict conditional. Objections to strict conditional (Strengthening antecedent, contraposition, transitivity, and the idea that we are looking at every single logical possibility to evaluate any indicative conditional.) Basic motivation for variably strict conditionals. The Lewis proof of explosion. A semantics for FDE. (Lecturer: Nicholas Ferenz.)

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