Combining Texts

All the ideas for 'fragments/reports', 'Ambitious, yet modest, Metaphysics' and 'works'

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9 ideas

1. Philosophy / E. Nature of Metaphysics / 5. Metaphysics beyond Science

16415

Esoteric metaphysics aims to be top science, investigating ultimate reality [Hofweber]

1. Philosophy / E. Nature of Metaphysics / 7. Against Metaphysics

16413

Science has discovered properties of things, so there are properties - so who needs metaphysics? [Hofweber]

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

11022

Gentzen introduced a natural deduction calculus (NK) in 1934 [Gentzen, by Read]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

11065

The inferential role of a logical constant constitutes its meaning [Gentzen, by Hanna]

11023

The logical connectives are 'defined' by their introduction rules [Gentzen]

11213

Each logical symbol has an 'introduction' rule to define it, and hence an 'elimination' rule [Gentzen]

5. Theory of Logic / G. Quantification / 1. Quantification

16416

The quantifier in logic is not like the ordinary English one (which has empty names, non-denoting terms etc) [Hofweber]

6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / g. Incompleteness of Arithmetic

10067

Gentzen proved the consistency of arithmetic from assumptions beyond arithmetic [Gentzen, by Musgrave]

13. Knowledge Criteria / D. Scepticism / 1. Scepticism

3061	Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius]