Combining Texts

Ideas for 'Classical Cosmology (frags)', 'Introduction to the Theory of Logic' and 'Tractatus Logico-Philosophicus'

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3 ideas

5. Theory of Logic / B. Logical Consequence / 3. Deductive Consequence |-

18277

If q implies p, that is justified by q and p, not by some 'laws' of inference [Wittgenstein]

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

10899

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

10893

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