Combining Texts

Ideas for 'fragments/reports', 'Nature's Metaphysics' and 'Introduction to the Theory of Logic'

expand these ideas     |    start again     |     choose another area for these texts

display all the ideas for this combination of texts

---

3 ideas

5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=

10893

Γ |= φ for sentences if φ is true when all of Γ is true [Zalabardo]

10899

Γ |= φ if φ is true when all of Γ is true, for all structures and interpretations [Zalabardo]

5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens

8078	Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]