Ordinal: Revision history

6 September 2023

• curprev 18:1118:11, 6 September 2023‎ RhubarbJayde talk contribs‎ 8,427 bytes +1,649‎ No edit summary undo Tag: Visual edit

3 September 2023

• curprev 17:3517:35, 3 September 2023‎ RhubarbJayde talk contribs‎ 6,778 bytes +85‎ No edit summary undo Tag: Visual edit
• curprev 16:5316:53, 3 September 2023‎ RhubarbJayde talk contribs‎ 6,693 bytes +1,204‎ No edit summary undo Tag: Visual edit

31 August 2023

• curprev 22:1622:16, 31 August 2023‎ C7X talk contribs‎ 5,489 bytes +198‎ →‎Ordinal arithmetic undo
• curprev 14:2114:21, 31 August 2023‎ RhubarbJayde talk contribs‎ 5,291 bytes +21‎ No edit summary undo Tag: Visual edit

29 August 2023

• curprev 21:5021:50, 29 August 2023‎ C7X talk contribs‎ 5,270 bytes +43‎ Provable over ZFC (and I'd expect some weaker theories) undo
• curprev 19:2619:26, 29 August 2023‎ RhubarbJayde talk contribs‎ 5,227 bytes +4,543‎ No edit summary undo Tag: Visual edit

16 October 2022

• curprev 01:0901:09, 16 October 2022‎ C7X talk contribs‎ 684 bytes +165‎ Foundations other than set theory undo Tag: Visual edit
• curprev 00:3500:35, 16 October 2022‎ C7X talk contribs‎ 519 bytes +74‎ ZFC not only setting of pure sets. There are also theories with urelements →‎Von Neumann definition undo Tag: Visual edit

19 September 2022

• curprev 19:4119:41, 19 September 2022‎ EricABQ talk contribs‎ 445 bytes +445‎ Created page with "In set theory, the '''ordinal numbers''' or '''ordinals''' are an extension of the natural numbers that describe the order types of well-ordered sets. A set \( S \) is '''well-ordered''' if each non-empty \( T \subseteq S \) has a least element. ==Von Neumann definition== The Von Neumann definition of ordinals defines ordinals as objects in ZFC. Each ordinal \( \alpha \) is defined as the set of all ordinals less than \( \alpha \)."