# Tag management 2019

New year, new tag management thread.

Rules of the game are basically the same:

• A particularly bad tag (a rule of thumb: «if I can't imagine a person classifying a tag as either interesting or ignored, I'm getting rid of it»),
• A tag that should be a synonym of an existing one,
• A tag that used for two or more completely unrelated things,
• A need to create a new tag;
• Wait a couple of days before implementing a suggestion.
• After the problem described in an answer is resolved, please edit it to say so.

Also, note that one may use [tag:calculus] for , i.e. tags on the main site, and [meta-tag:discussion] for , i.e. for tags on the meta site.

Proposal to blacklist

Reason: It's overly broad and there is no real mathematical content in it. Also, the tag has been created and removed several times.

• As currently defined, it doesn't seem likely to be useful or consistently applied. It doesn't mean what I'd expect it to either, which would be something about dentifying different classes of theorem or proof and generic approaches to generalising ttem. So it's possibly a misleading tag too. – timtfj Jan 31 at 2:07

Proposal : tag(s) for accessible and locally presentable categories

A couple months ago someone created (among others) the tags locally presentable categories and accessible categories, but they were removed. Now this is not really my specialty, but I think these tags could be useful, and in fact I was surprised to learn from Martin Sleziak that this was the first time they appeared.

Both topics give some search results on the site, and there seems to be no tag more precise than "category theory" on the questions about them. By the way, the tags exist on MO, and there are also a book and a lot of articles on the subject.

Proposal: create "visualisation" for

The tag synonym instructions suggest the following.

If you know of common, alternate spellings or phrasings for this tag, add them here so we can automatically correct them in the future. For example, suggest “bike” as a synonym for bicycle, or “sock” for socks.

In , we use "visualisation" instead of . French regular verbs end more commonly in "-ser" then in "-zer". Searching "visualization" on French.SE gives you nothing. Since French and English develop independently and interdependently, both spellings appear in the Anglo-Saxon world. Thus, "visualisation" can be qualified as an alternate spelling of .

• I don't think it's really worth creating French version of every tag... On the other hand, I think this spelling is sometimes used in British English, so it could be useful. – Arnaud D. 2 days ago