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- 15:21, 21 May 2024 Matchstick diagram (hist | edit) [1,108 bytes] CreeperBomb (talk | contribs) (Created page with "{{stub}} A matchstick diagram is a particular representation for ordinals. The idea is to lay down vertical lines left-to-right such that the diagram has an order type of the ordinal, where being left of a stick is equivalent to being lesser. Equivalently, enumerating a diagram will result in all ordinals less than the corresponding ordinal having their own stick. This second definition is simply another way of saying the first definition. Matchsticks may have unequa...")
- 21:16, 30 March 2024 Cardinal arithmetic (hist | edit) [5,374 bytes] CreeperBomb (talk | contribs) (Copied from wikipedia https://en.wikipedia.org/wiki/Cardinal_number#Cardinal_arithmetic)