tikzcd

Stream: FLT

[Kevin Buzzard]

I put a commutative diagram in the blueprint, and I've just noticed that currently it's not compiling (I'm on train WiFi, can someone else confirm that it doesn't compile for them?)

Screenshot 2025-05-01 at 15.35.43.png

It's in section 8 of the blueprint, about half way down this page.

The weird (to me) thing is that I can compile the blueprint locally with no errors or complaints about tikz. What have I done wrong?

[Aaron Liu]

Me too
image.png

[Kevin Buzzard]

FWIW I have \usepackage{tikz-cd} in print.tex and I seem to have both \usepackage{tikz-cd} and \usepackage{tikz} in web.tex (and I freely confess to not having a clue about LaTeX). Maybe I'm asking "what's the correct modern way to draw diagrams in LaTeX (and which will work in PlasTex)"? Google seems to give contradictory answers.

[Michael Rothgang]

I've used tikzcd in pdflatex and it worked well. I don't know if that works in plastex. @Patrick Massot have you tried/ do you think a different package is better (which works with plastex)?

[Patrick Massot]

tikzcd is the answer.

[Patrick Massot]

I has been used massively in LTE so we know it works.

[Patrick Massot]

I don’t remember whether there is anything special to do. We should check LTE.

[Pietro Monticone]

I'll try to fix it later today.

I remember something like:

# Use this
\begin{center}
\begin{tikzcd}
...
\end{tikzcd}
\end{center}

# instead of this
\[
\begin{tikzcd}
...
\end{tikzcd}
\]

# or this
\begin{equation}
\begin{tikzcd}
...
\end{tikzcd}
\end{equation}

[Pietro Monticone]

I think we already solved this problem once in #Infinity-Cosmos

[Pietro Monticone]

No, it might be something else...

Let me check.

[Pietro Monticone]

I'm not exactly sure about what's going on here: none of the solutions I adopted in the past worked:

• This doesn't seem to be the issue
• This doesn't seem to be the issue

@Patrick Massot do you have any idea?

[Ruben Van de Velde]

Does it actually work locally or does it fail silently?

[Ruben Van de Velde]

Maybe it's just not installed in ci

[Patrick Massot]

I opened a PR fixing the issue.

[Patrick Massot]

It seems nobody ever tried the combination of using tikzcd (or any other package requiring to using the Imager framework instead of simply using html+mathjax) and changing depgraph colors…

[Patrick Massot]

Ruben Van de Velde said:

Does it actually work locally or does it fail silently?

It didn’t work locally, and had a a clear error message (at least clear to me…).

[Pietro Monticone]

Thank you so much, merged!