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Ideas for 'Lectures on Ethics', 'works' and 'Principia Mathematica'

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4 ideas

5. Theory of Logic / B. Logical Consequence / 7. Strict Implication

8204	Lewis's 'strict implication' preserved Russell's confusion of 'if...then' with implication [Quine on Russell/Whitehead]

9359	Russell's implication means that random sentences imply one another [Lewis,CI on Russell/Whitehead]

5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic

21707

Russell unusually saw logic as 'interpreted' (though very general, and neutral) [Russell/Whitehead, by Linsky,B]

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

10036

In 'Principia' a new abstract theory of relations appeared, and was applied [Russell/Whitehead, by Gödel]