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Ideas for 'fragments/reports', 'Essays on Active Powers 3: Princs of action' and 'Intellectual Autobiography'

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4 ideas

4. Formal Logic / A. Syllogistic Logic / 3. Term Logic

18904

'Predicable' terms come in charged pairs, with one the negation of the other [Sommers, by Engelbretsen]

18895

Logic which maps ordinary reasoning must be transparent, and free of variables [Sommers]

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

8077	Stoic propositional logic is like chemistry - how atoms make molecules, not the innards of atoms [Chrysippus, by Devlin]

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL

20791

Chrysippus has five obvious 'indemonstrables' of reasoning [Chrysippus, by Diog. Laertius]