Generalized Reedy categories, Direct categories #571
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ncfavier
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Nov 29, 2025
Suggested-by: Naïm Camille Favier <[email protected]>
ncfavier
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Nov 29, 2025
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Description
Just some basic definitions about Reedy/direct categories, along with a theorem about reflective subcategories of reedy categories.
Notes
It might be worth omitting "generalized" from both of these definitions, and calling the strict variants "skeletal Reedy" and "skeletal direct". I've opted to keep the same nomenclature as the literature here, but we almost always want to use the generalized versions.
Checklist
Before submitting a merge request, please check the items below:
support/sort-imports.hs(ornix run --experimental-features nix-command -f . sort-imports).