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Ideas for 'fragments/reports', 'Introduction to Mathematical Logic' and 'Set Theory and its Logic'

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5 ideas

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]

17749

Post proved the consistency of propositional logic in 1921 [Walicki]

17765

Propositional language can only relate statements as the same or as different [Walicki]

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]

4. Formal Logic / B. Propositional Logic PL / 3. Truth Tables

17764

Boolean connectives are interpreted as functions on the set {1,0} [Walicki]