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Full Idea
Wright intends the claim that Hume's Principle (HP) embodies an explanation of the concept of number to imply that it is analytic of the concept of cardinal number - so it is an analytic or conceptual truth, much as a definition would be.
Clarification
HP says 1-1 correspondence means same number
Gist of Idea
Wright says Hume's Principle is analytic of cardinal numbers, like a definition
Source
report of Crispin Wright (Frege's Concept of Numbers as Objects [1983]) by Richard G. Heck - Cardinality, Counting and Equinumerosity 1
Book Ref
-: 'Notre Dame Journal of Formal Logic' [-], p.189
A Reaction
Boolos is quoted as disagreeing. Wright is claiming a fundamental truth. Boolos says something can fix the character of something (as yellow fixes bananas), but that doesn't make it 'fundamental'. I want to defend 'fundamental'.