Combining Texts

All the ideas for 'Queries to the 'Opticks'', 'works' and 'The Great Event'

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7 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]

26. Natural Theory / D. Laws of Nature / 1. Laws of Nature

16746

Principles of things are not hidden features of forms, but the laws by which they were formed [Newton]

28. God / B. Proving God / 3. Proofs of Evidence / e. Miracles

7902	The Buddha made flowers float in the air, to impress people, and make them listen [Mahavastu]