Ideas from 'Abstract Objects: a Case Study' by Stephen Yablo [2002], by Theme Structure
[found in 'Things: Philosophical Papers vol. 2' by Yablo,Stephen [OUP 2010,978-0-19-926649-0]].
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6. Mathematics / C. Sources of Mathematics / 6. Logicism / c. Neo-logicism
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10580
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Mathematics is both necessary and a priori because it really consists of logical truths
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6. Mathematics / C. Sources of Mathematics / 9. Fictional Mathematics
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10579
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Putting numbers in quantifiable position (rather than many quantifiers) makes expression easier
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7. Existence / C. Structure of Existence / 7. Abstract/Concrete / a. Abstract/concrete
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10577
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Concrete objects have few essential properties, but properties of abstractions are mostly essential
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10578
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We are thought to know concreta a posteriori, and many abstracta a priori
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