Proper class: Revision history

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25 March 2024

31 August 2023

  • curprev 15:0515:05, 31 August 2023‎ RhubarbJayde talk contribs‎ 1,432 bytes +1,432‎ Created page with "In second-order set theories, such as Morse-Kelley set theory, a proper class is a collection of objects which is too large to be a set - either because that would cause a paradox, or because it contains another proper class. The axiom of limitation of size implies that any two proper classes can be put in bijection, implying they all have "size \(\mathrm{Ord}\)". Russel's paradox combined with the axiom of regularity ensure that \(V\), the class of all sets, is a proper..." Tag: Visual edit
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