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So, currently Category:Layers redirects to Category:Planes_(geometry) and thus this Monolayers category is the only object inside Layers category. Since Monolayers deal with atomic structures and related to chemistry, I don't think it is a good idea to include it in Category:Planes_(geometry), but it can't just be in Layers category which is a redirect.
@Fgnievinski: you reverted my edit and in the summary just wrote: layers are geometrical planes. If you can explain why it is a good idea that Layers category (which is a redirect) contains only this category, I'll leave it be. Deltaspace42 (talk • contribs) 09:14, 27 December 2023 (UTC)[reply]