Combining Texts

Ideas for 'Logicism and Ontological Commits. of Arithmetic', 'The Concept of Logical Consequence' and 'The Decline of the West'

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2 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

18812

Split out the logical vocabulary, make an assignment to the rest. It's logical if premises and conclusion match [Tarski, by Rumfitt]

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

13344

X follows from sentences K iff every model of K also models X [Tarski]