7 ideas
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] |
9541 | The Law of Transposition says (P→Q) → (¬Q→¬P) [Hughes/Cresswell] |
9543 | The rules preserve validity from the axioms, so no thesis negates any other thesis [Hughes/Cresswell] |
9544 | A system is 'weakly' complete if all wffs are derivable, and 'strongly' if theses are maximised [Hughes/Cresswell] |
12695 | Epicurean atomists say body is sensible, to distinguish it from space. [Garber] |
7413 | Without confidence in our beliefs, how should we actually live? [Tuck] |
12705 | Epicurean atoms are distinguished by their extreme hardness [Garber] |