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'works', 'The Causal Theory of Names' and 'The Principles of Mathematics'
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15 ideas
5. Theory of Logic / B. Logical Consequence / 8. Material Implication
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14108
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It would be circular to use 'if' and 'then' to define material implication [Russell]
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14106
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Implication cannot be defined [Russell]
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5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic
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14167
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The only classes are things, predicates and relations [Russell]
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
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4730
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For Aristotle, the subject-predicate structure of Greek reflected a substance-accident structure of reality [Aristotle, by O'Grady]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / b. Basic connectives
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14105
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There seem to be eight or nine logical constants [Russell]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
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18722
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Negations are not just reversals of truth-value, since that can happen without negation [Wittgenstein on Russell]
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5. Theory of Logic / E. Structures of Logic / 3. Constants in Logic
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14104
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Constants are absolutely definite and unambiguous [Russell]
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5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
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14114
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Variables don't stand alone, but exist as parts of propositional functions [Russell]
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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 / G. Quantification / 1. Quantification
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14137
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'Any' is better than 'all' where infinite classes are concerned [Russell]
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5. Theory of Logic / L. Paradox / 4. Paradoxes in Logic / a. Achilles paradox
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14149
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The Achilles Paradox concerns the one-one correlation of infinite classes [Russell]
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5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / c. Burali-Forti's paradox
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15895
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Russell discovered the paradox suggested by Burali-Forti's work [Russell, by Lavine]
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