Combining Texts

All the ideas for 'Mind and Its Place in Nature', 'An Introduction to Modal Logic' and 'Letters to Schlick'

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6 ideas

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / b. Terminology of PL
9540 A 'value-assignment' (V) is when to each variable in the set V assigns either the value 1 or the value 0 [Hughes/Cresswell]
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / d. Basic theorems of PL
9541 The Law of Transposition says (P→Q) → (¬Q→¬P) [Hughes/Cresswell]
4. Formal Logic / B. Propositional Logic PL / 4. Soundness of PL
9543 The rules preserve validity from the axioms, so no thesis negates any other thesis [Hughes/Cresswell]
5. Theory of Logic / K. Features of Logics / 4. Completeness
9544 A system is 'weakly' complete if all wffs are derivable, and 'strongly' if theses are maximised [Hughes/Cresswell]
12. Knowledge Sources / B. Perception / 6. Inference in Perception
7628 Broad rejects the inferential component of the representative theory [Broad, by Maund]
19. Language / F. Communication / 6. Interpreting Language / a. Translation
18285 All translation loses some content (but language does not create reality) [Carnap]