Combining Texts
Ideas for
'Logical Pluralism', 'Intro to 'Philosophy of Logic'' and 'Syntactic Structure'
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12 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
9457
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The two main views in philosophy of logic are extensionalism and intensionalism [Jacquette]
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13235
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Logic studies consequence; logical truths are consequences of everything, or nothing [Beall/Restall]
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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
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The view of logic as knowing a body of truths looks out-of-date [Beall/Restall]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
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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
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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
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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 |=
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A sentence follows from others if they always model it [Beall/Restall]
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5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
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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 / I. Semantics of Logic / 5. Extensionalism
9458
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Extensionalists say that quantifiers presuppose the existence of their objects [Jacquette]
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5. Theory of Logic / I. Semantics of Logic / 6. Intensionalism
9461
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Intensionalists say meaning is determined by the possession of properties [Jacquette]
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5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / d. The Preface paradox
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Preface Paradox affirms and denies the conjunction of propositions in the book [Beall/Restall]
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