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Ideas for 'Defending the Axioms', 'Theory of Science (Wissenschaftslehre, 4 vols)' and 'Nominalism'

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7. Existence / C. Structure of Existence / 1. Grounding / c. Grounding and explanation

17265

Philosophical proofs in mathematics establish truths, and also show their grounds [Bolzano, by Correia/Schnieder]

7. Existence / C. Structure of Existence / 7. Abstract/Concrete / a. Abstract/concrete

8953	Abstract entities don't depend on their concrete entities ...but maybe on the totality of concrete things [Szabó]