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Ideas for 'fragments/reports', 'Goodbye Descartes' and 'Set Theory and related topics (2nd ed)'

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6 ideas

4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic

8081	'No councillors are bankers' and 'All bankers are athletes' implies 'Some athletes are not councillors' [Devlin]

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]

8085	Modern propositional inference replaces Aristotle's 19 syllogisms with modus ponens [Devlin]

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

8086	Predicate logic retains the axioms of propositional logic [Devlin]

20791

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

4. Formal Logic / F. Set Theory ST / 3. Types of Set / e. Equivalence classes

8920	Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz]