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'works', 'Mere Possibilities' and 'The Concept of Logical Consequence'
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5 ideas
5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
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Split out the logical vocabulary, make an assignment to the rest. It's logical if premises and conclusion match [Tarski, by Rumfitt]
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5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=
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X follows from sentences K iff every model of K also models X [Tarski]
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
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We regiment to get semantic structure, for evaluating arguments, and understanding complexities [Stalnaker]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / e. or
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In 'S was F or some other than S was F', the disjuncts need S, but the whole disjunction doesn't [Stalnaker]
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5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models
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A 'model' is a sequence of objects which satisfies a complete set of sentential functions [Tarski]
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