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  • #REDIRECT [[Category (category theory)]]
    40 bytes (4 words) - 13:31, 8 October 2009
  • A category, <math>\mathcal{C}</math>, is a mathematical object consisting of: A category <math>\mathcal{C}</math> is called '''small''' if both <math>\text{Ob}(\mat
    5 KB (792 words) - 18:01, 7 April 2012
  • ...\mathcal{C}^{op}</math>, called the '''opposite category''' or the '''dual category''' by 'reversing all the morphisms of <math>\mathcal{C}</math>. It is know easy to verify that <math>\mathcal{C}^{op}</math> is a category:
    2 KB (438 words) - 16:07, 8 September 2008
  • ...ategory such that for all objects <math>A</math> and <math>B</math> in the category, there exists a set <math>\text{Hom}(A,B)</math> whose [[element]]s are exa ...ory of set]]s is a locally small category, even though it is not a [[small category]]. This is because there is no (small) set containing all (small) sets, bu
    912 bytes (157 words) - 15:13, 19 November 2009
  • 1 KB (196 words) - 11:57, 17 December 2024
  • '''Category theory''' is the study of [[Category|categories]]. [[Category:Category theory]]
    100 bytes (12 words) - 17:53, 29 October 2024

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