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Diffstat (limited to 'content/zettel/4d2d.md')
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diff --git a/content/zettel/4d2d.md b/content/zettel/4d2d.md new file mode 100644 index 0000000..7fcc138 --- /dev/null +++ b/content/zettel/4d2d.md @@ -0,0 +1,14 @@ ++++ +title = "Presheaf" +author = "Yann Herklotz" +tags = [] +categories = [] +backlinks = ["4d2c"] +forwardlinks = [] +zettelid = "4d2d" ++++ + +A presheaf is a functor from the co-category to the category of sets. +This means that it can be expressed as the following: + +$C^{\mathit{op}}\rightarrow \mathit{Set}$ |