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Ideas for 'Frege philosophy of mathematics', 'Consciousness' and 'Elements of Geometry'

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2 ideas

2. Reason / D. Definition / 7. Contextual Definition

9847	A contextual definition permits the elimination of the expression by a substitution [Dummett]

2. Reason / E. Argument / 6. Conclusive Proof

8623	Proof reveals the interdependence of truths, as well as showing their certainty [Euclid, by Frege]