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'Logical Pluralism', 'Empty Names' and 'fragments/reports'
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14 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
13235
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Logic studies consequence; logical truths are consequences of everything, or nothing [Beall/Restall]
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13238
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Syllogisms are only logic when they use variables, and not concrete terms [Beall/Restall]
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5. Theory of Logic / A. Overview of Logic / 2. History of Logic
13234
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The view of logic as knowing a body of truths looks out-of-date [Beall/Restall]
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5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
13232
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Logic studies arguments, not formal languages; this involves interpretations [Beall/Restall]
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5. Theory of Logic / A. Overview of Logic / 8. Logic of Mathematics
13241
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The model theory of classical predicate logic is mathematics [Beall/Restall]
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5. Theory of Logic / B. Logical Consequence / 2. Types of Consequence
13253
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There are several different consequence relations [Beall/Restall]
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5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=
13240
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A sentence follows from others if they always model it [Beall/Restall]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
18935
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Semantic theory should specify when an act of naming is successful [Sawyer]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / c. Names as referential
18945
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Millians say a name just means its object [Sawyer]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / e. Empty names
18934
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Sentences with empty names can be understood, be co-referential, and even be true [Sawyer]
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18938
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Frege's compositional account of truth-vaues makes 'Pegasus doesn't exist' neither true nor false [Sawyer]
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5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions
18947
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Definites descriptions don't solve the empty names problem, because the properties may not exist [Sawyer]
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5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
13236
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Logical truth is much more important if mathematics rests on it, as logicism claims [Beall/Restall]
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5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / d. The Preface paradox
13237
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Preface Paradox affirms and denies the conjunction of propositions in the book [Beall/Restall]
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