Pandoc cannot recognize some uppercase Greek letters and lowercase omicron

[BrentHuang]

Explain the problem.

my markdown file content:

# greek_letters

| UpperCase | LowerCase | Pronunciation | UpperCase | LowerCase | Pronunciation |
|--|--|--|--|--|--|
| $\Alpha$ | $\alpha$ | Alpha | $\Beta$ | $\beta$ | Beta |
| $\Gamma \varGamma$ | $\gamma$ | Gamma | $\Delta \varDelta$ | $\delta$ | Delta |
| $\Epsilon$ | $\epsilon \varepsilon$ | Epsilon | $\Zeta$ | $\zeta$ | Zeta |
| $\Eta$ | $\eta$ | Eta | $\Theta \varTheta$ | $\theta \vartheta$ | Theta |
| $\Iota$ | $\iota$ | Iota | $\Kappa$ | $\kappa \varkappa$ | Kappa |
| $\Lambda \varLambda$ | $\lambda$ | Lambda | $\Mu$ | $\mu$ | Mu |
| $\Nu$ | $\nu$ | Nu | $\Xi \varXi$ | $\xi$ | Xi |
| $\Omicron$ | $\omicron$ | Omicron | $\Pi \varPi$ | $\pi \varpi$ | Pi |
| $\Rho$ | $\rho$ | Rho | $\Sigma \varSigma$ | $\sigma$ | Sigma |
| $\Tau$ | $\tau$ | Tau | $\Upsilon \varUpsilon$ | $\upsilon$ | Upsilon |
| $\Phi \varPhi$ | $\phi \varphi$ | Phi | $\Chi$ | $\chi$ | Chi |
| $\Psi \varPsi$ | $\psi$ | Psi | $\Omega \varOmega$ | $\omega$ | Omega |

command: pandoc ./greek_letters.md -o greek_letters.html

the output:

[WARNING] Could not convert TeX math \Alpha, rendering as TeX:
\Alpha
^
unexpected control sequence \Alpha
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Beta, rendering as TeX:
\Beta
^
unexpected control sequence \Beta
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Epsilon, rendering as TeX:
\Epsilon
^
unexpected control sequence \Epsilon
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Zeta, rendering as TeX:
\Zeta
^
unexpected control sequence \Zeta
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Eta, rendering as TeX:
\Eta
^
unexpected control sequence \Eta
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Iota, rendering as TeX:
\Iota
^
unexpected control sequence \Iota
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Kappa, rendering as TeX:
\Kappa
^
unexpected control sequence \Kappa
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Mu, rendering as TeX:
\Mu
^
unexpected control sequence \Mu
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Nu, rendering as TeX:
\Nu
^
unexpected control sequence \Nu
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Omicron, rendering as TeX:
\Omicron
^
unexpected control sequence \Omicron
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \omicron, rendering as TeX:
\omicron
^
unexpected control sequence \omicron
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Rho, rendering as TeX:
\Rho
^
unexpected control sequence \Rho
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Tau, rendering as TeX:
\Tau
^
unexpected control sequence \Tau
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"
[WARNING] Could not convert TeX math \Chi, rendering as TeX:
\Chi
^
unexpected control sequence \Chi
expecting "%", "\label", "\tag", "\nonumber", whitespace or "\allowbreak"

Pandoc version?

pandoc.exe 3.1.12.2, windows 10

[jgm]

Transferring to jgm/texmath.

Note: the list here
https://www.cmor-faculty.rice.edu/~heinken/latex/symbols.pdf
does not contain these; I assume they are defined in amssymb or somewhere else?

[tarleb]

I learned here that unicode-math defines those macros. I verified it for some of them, but I didn't find it in the docs.

[jgm]

That's quite strange. According to the documentation here unicode-math defines \mupAlpha (upright), \mitAlpha (italics), and \mbfAlpha (bold), but it says nothing about \Alpha.

texmath knows how to handle \mitAlpha (though not the other variants), but not \Alpha.

I'd like to know better where this symbol is defined. Maybe this is the place?
https://mirror.las.iastate.edu/tex-archive/macros/unicodetex/latex/unicode-math/unicode-math-code.pdf p. 123.

[BrentHuang]

What should I do?

[jgm]

It is fixed in this library. The fix will be in the next release of pandoc.
You can try a pandoc nightly for now.

[BrentHuang]

thank you!

[BrentHuang]

\theta > 90 \degree

Unable to recognize '\degree'

[jgm]

Please submit a separate report (including full instructions for reproducing; I can't really tell from what you wrote).