Combining Texts

Ideas for 'fragments/reports', 'Relations' and 'Nature and Meaning of Numbers'

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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]

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 / F. Set Theory ST / 3. Types of Set / d. Infinite Sets

10183

An infinite set maps into its own proper subset [Dedekind, by Reck/Price]

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / f. Axiom of Infinity V

22288

We have the idea of self, and an idea of that idea, and so on, so infinite ideas are available [Dedekind, by Potter]

4. Formal Logic / G. Formal Mereology / 1. Mereology

10706

Dedekind originally thought more in terms of mereology than of sets [Dedekind, by Potter]