Combining Philosophers
Ideas for Gareth Evans, Dale Jacquette and Moses Schnfinkel
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15 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
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9457
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The two main views in philosophy of logic are extensionalism and intensionalism [Jacquette]
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7681
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Logic describes inferences between sentences expressing possible properties of objects [Jacquette]
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5. Theory of Logic / A. Overview of Logic / 6. Classical Logic
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9463
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Classical logic is bivalent, has excluded middle, and only quantifies over existent objects [Jacquette]
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5. Theory of Logic / C. Ontology of Logic / 2. Platonism in Logic
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7682
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Logic is not just about signs, because it relates to states of affairs, objects, properties and truth-values [Jacquette]
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5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
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17699
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Variables are auxiliary notions, and not part of the 'eternal' essence of logic [Schönfinkel]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
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9038
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We must distinguish what the speaker denotes by a name, from what the name denotes [Evans]
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5824
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How can an expression be a name, if names can change their denotation? [Evans]
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9042
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A private intention won't give a name a denotation; the practice needs it to be made public [Evans]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / c. Names as referential
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9041
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The Causal Theory of Names is wrong, since the name 'Madagascar' actually changed denotation [Evans]
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5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions
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7697
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On Russell's analysis, the sentence "The winged horse has wings" comes out as false [Jacquette]
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5. Theory of Logic / G. Quantification / 4. Substitutional Quantification
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9466
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Nominalists like substitutional quantification to avoid the metaphysics of objects [Jacquette]
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9465
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Substitutional universal quantification retains truth for substitution of terms of the same type [Jacquette]
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5. Theory of Logic / I. Semantics of Logic / 5. Extensionalism
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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
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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 / 5. Paradoxes in Set Theory / d. Russell's paradox
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7701
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Can a Barber shave all and only those persons who do not shave themselves? [Jacquette]
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