Combining Texts

All the ideas for 'fragments/reports', 'An Introduction to Modal Logic' and 'A Short History of German Philosophy'

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7 ideas

1. Philosophy / E. Nature of Metaphysics / 3. Metaphysical Systems

22820

Early Romantics sought a plurality of systems, in a quest for freedom [Hösle]

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]

10. Modality / A. Necessity / 8. Transcendental Necessity

490	Everything happens by reason and necessity [Leucippus]

25. Social Practice / E. Policies / 5. Education / d. Study of history

22819

In the 18th century history came to be seen as progressive, rather than cyclical [Hösle]