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Ideas for 'works', 'The Spirit of Democratic Capitalism' and 'Frege on Apriority (with ps)'

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6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / d. Peano arithmetic

16902	Peano arithmetic requires grasping 0 as a primitive number [Burge]
	Full Idea: In the Peano axiomatisation, arithmetic seems primitively to involve the thought that 0 is a number.
	From: Tyler Burge (Frege on Apriority (with ps) [2000], 5)
	A reaction: Burge is pointing this out as a problem for Frege, for whom only the logic is primitive.