Combining Texts

All the ideas for 'Reply to Professor Marcus', 'Letters to Russell' and 'Papers of 1918'

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5 ideas

5. Theory of Logic / G. Quantification / 4. Substitutional Quantification

10801

Either reference really matters, or we don't need to replace it with substitutions [Quine]

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / g. Real numbers

18253

I wish to go straight from cardinals to reals (as ratios), leaving out the rationals [Frege]

6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism

18166

The loss of my Rule V seems to make foundations for arithmetic impossible [Frege]

9. Objects / A. Existence of Objects / 2. Abstract Objects / c. Modern abstracta

18269

Logical objects are extensions of concepts, or ranges of values of functions [Frege]

19. Language / D. Propositions / 4. Mental Propositions

22307

Propositions don't name facts, because two opposed propositions can match one fact [Russell]