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Add missing latex symbols \Mu and \Nu #50913

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Add missing latex symbols \Mu and \Nu #50913

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eschnett
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Closes #50911.

@i9e1 i9e1 mentioned this pull request Aug 14, 2023
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@JeffBezanson
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Seems reasonable but are these ever distinguishable from M, N, O? Anybody ever normalize those?

@eschnett
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We also have \Alpha, \Beta, etc. In my terminal, these look (very slightly) different from their Latin counterparts.

@JeffBezanson JeffBezanson added the status:merge me PR is reviewed. Merge when all tests are passing label Aug 15, 2023
@stevengj stevengj mentioned this pull request Aug 15, 2023
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stevengj commented Aug 15, 2023 •
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I would suggest #50925 instead. We should just get rid of the \upfoo (upgreek-style) abbreviations, which were a goof in the initial tables. ("up" here stands for "upright", not "uppercase".)

@stevengj stevengj removed the status:merge me PR is reviewed. Merge when all tests are passing label Aug 15, 2023
giordano pushed a commit that referenced this pull request Dec 15, 2023
@stevengj
remove unnecessary \up (upright) from some latex abbrevs (e.g. \upM…
5e4e7fa 
…u -> \Mu) (#50925)

Closes #50911.  Closes #50913.

There were a few oddball symbols prefixed with `\up` (for "upright") for
no reason that I can tell, ala the LaTeX "upgreek" package, even though
we don't use an `\up` prefix for other upright Greek letters (e.g. we
have `\alpha`, not `\upalpha`, even though it isn't italicized — we have
`\italpha` for italic alpha).

Not breaking since this is just a UI thing.

(In practice, I doubt many people use these symbols. e.g. `\upMu` is
`Μ`, which looks a lot like the Latin `M`. But there is no reason to
have the `\up` prefix here. It seems to have just been an automated
abbreviation-import snafu. And [`\upkoppa 'ϟ'`
(U+O3DF)](https://www.compart.com/en/unicode/U+03DF) is visually quite
distinctive though I've never seen it used in math, not to mention
lowercase — it's definitely goofy to have an `\up` prefix for it.)
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REPL does not understand \Mu and \Nu
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@eschnett @JeffBezanson @stevengj