Combining Philosophers
Ideas for Douglas Lackey, Dag Prawitz and Goodman,N/Quine,W
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7 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
13831
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Logic is based on transitions between sentences [Prawitz]
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5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
13827
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Logical consequence isn't a black box (Tarski's approach); we should explain how arguments work [Prawitz]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
13825
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Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz]
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5. Theory of Logic / H. Proof Systems / 4. Natural Deduction
13823
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In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz]
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5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models
13826
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Model theory looks at valid sentences and consequence, but not how we know these things [Prawitz]
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5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / b. Cantor's paradox
21554
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Sets always exceed terms, so all the sets must exceed all the sets [Lackey]
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5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / c. Burali-Forti's paradox
21553
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It seems that the ordinal number of all the ordinals must be bigger than itself [Lackey]
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