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Show new changes starting from 18:48, 16 October 2026
 
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16 October 2026

 N    11:31  1.2: Functions (Webpage) (Q2199) 3 changes hist +2,960 [Rongzhou (3×)]
      
11:31 (cur | prev) +117 Rongzhou talk contribs (Linked 1.2: Functions (Webpage) to its wiki page)
      
11:31 (cur | prev) +354 Rongzhou talk contribs (Imported 1.2: Functions (Webpage) from an external authority)
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11:31 (cur | prev) +2,489 Rongzhou talk contribs (Imported 1.2: Functions (Webpage) from an external authority)
 N    11:08  Set 2 changes hist +4,646 [Rongzhou (2×)]
      
11:08 (cur | prev) +276 Rongzhou talk contribs
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10:51 (cur | prev) +4,370 Rongzhou talk contribs (Created page with "A '''set''' is an unordered collection of distinct '''elements'''.<ref>{{#cite:Q2194}}</ref> == Formal definition == According to [https://en.wikipedia.org/wiki/Morse%E2%80%93Kelley_set_theory Morse-Kelley set theory]: $$ \exists B: A \in B \iff A \text{ is a set} $$ <ref>{{#cite:Q2184}}</ref> == Defining a set == === Enumeration === A small finite set can be described by '''enumerating''' all its elements: $$ S=\{\text{Apple, Banana, Peaches}\} $$ Some infinit...")