Basic concepts in infinite set theory

Set-theoretic definition of natural numbers

In set theory, several ways have been proposed to construct the natural numbers. These include the representation via von Neumann ordinals, commonly employed in axiomatic set theory, and a system based on equinumerosity that was proposed by Gottlob Frege and by Bertrand Russell. (Wikipedia).

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From playlist Sets (Discrete Math)

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From playlist Set Theory by Mathoma

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From playlist Axiomatic Set Theory

Related pages

Set theory | Natural deduction | Gottlob Frege | Axiom of infinity | George Boolos | Hume's principle | New Foundations | Foundations of mathematics | Peano axioms | Empty set | Zermelo–Fraenkel set theory | Equivalence class | Successor function | Natural number | Cardinal number | Set (mathematics) | Category theory | Equivalence relation | Type theory | Bertrand Russell | Equinumerosity