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Ideas for 'Axiomatic Theories of Truth (2005 ver)', 'The Metaphysics of Modality' and 'Outlines of Pyrrhonism'

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5 ideas

5. Theory of Logic / B. Logical Consequence / 8. Material Implication

12196

A valid hypothetical syllogism is 'that which does not begin with a truth and end with a falsehood' [Sext.Empiricus]

5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic

15652

We can use truth instead of ontologically loaded second-order comprehension assumptions about properties [Halbach]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and

12010

Is the meaning of 'and' given by its truth table, or by its introduction and elimination rules? [Forbes,G]

5. Theory of Logic / E. Structures of Logic / 7. Predicates in Logic

15651

Instead of saying x has a property, we can say a formula is true of x - as long as we have 'true' [Halbach]

5. Theory of Logic / L. Paradox / 7. Paradoxes of Time

1902	Since Socrates either died when he was alive (a contradiction) or died when he was dead (meaningless), he didn't die [Sext.Empiricus]