Disjoint union: Revision history

25 March 2024

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22 December 2023

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22 October 2023

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1 September 2023

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• curprev 12:5212:52, 1 September 2023‎ RhubarbJayde talk contribs‎ 748 bytes +748‎ Created page with "The disjoint union of a collection of sets is a set so that each element of the collection injects into the disjoint union, and so that the collection of images of each element of the collection creates a partition of the disjoint union. For example, the disjoint union of disjoint sets is just their union, while, e.g. the disjoint union of \(\{1,2\}\) and \(\{2,3\}\) could be taken to be \(\{(1,1),(1,2),(2,2),(2,3)\}\). The cardinality of the disjoint union of two sets i..." Tag: Visual edit