Combining Texts

All the ideas for 'fragments/reports', 'Quodlibeta' and 'works'

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10 ideas

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]

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]

7. Existence / E. Categories / 3. Proposed Categories

16657

Substance, Quantity and Quality are real; other categories depend on those three [Henry of Ghent]

8. Modes of Existence / A. Relations / 1. Nature of Relations

16658

The only reality in the category of Relation is things from another category [Henry of Ghent]

8. Modes of Existence / B. Properties / 8. Properties as Modes

16645

Accidents are diminished beings, because they are dispositions of substance (unqualified being) [Henry of Ghent]

11. Knowledge Aims / C. Knowing Reality / 3. Idealism / b. Transcendental idealism

22012

Kant says things-in-themselves cause sensations, but then makes causation transcendental! [Henry of Ghent, by Pinkard]

21. Aesthetics / C. Artistic Issues / 7. Art and Morality

468	Musical performance can reveal a range of virtues [Damon of Ath.]