Category of sets

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

In the mathematical field of category theory, the category of sets, denoted by Set, is the category whose objects are sets. The arrows or morphisms between sets A and B are the functions from A to B, and the composition of morphisms is the composition of functions.

Excerpt from the Wikipedia article “Category of sets”, under the CC BY-SA 4.0 license. Read the article on Wikipedia