Combining Texts

All the ideas for 'Second Philosophy', 'works' and '24: Book of Jeremiah'

expand these ideas     |    start again     |     specify just one area for these texts

---

9 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 / A. Overview of Logic / 7. Second-Order Logic

10594

Henkin semantics is more plausible for plural logic than for second-order logic [Maddy]

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]

24. Political Theory / B. Nature of a State / 1. Purpose of a State

7346	Jeremiah implied a link between weakness and goodness, and the evil of the state [Jeremiah, by Johnson,P]

28. God / A. Divine Nature / 3. Divine Perfections

22920

Do I not fill heaven and earth? saith the Lord [Jeremiah]

28. God / C. Attitudes to God / 3. Deism

22089

Am I a God afar off, and not a God close at hand? [Jeremiah]