Combining Texts

All the ideas for 'Rechnungsmethoden (dissertation)', 'Papers of 1918' and 'The Logical Basis of Metaphysics'

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4 ideas

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not

18801

Classical negation is circular, if it relies on knowing negation-conditions from truth-conditions [Dummett]

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / c. Priority of numbers

18256

Quantity is inconceivable without the idea of addition [Frege]

6. Mathematics / C. Sources of Mathematics / 2. Intuition of Mathematics

9831	Geometry appeals to intuition as the source of its axioms [Frege]

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

22307

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