# aligned equations

hi

I'm trying to use Marked 2 with TextMate. I find that

$$\begin{align*}

\vec{F}C &= m\vec{a}C \

\vec{F}_C &=m\frac{v2}{R} \label{centf}

\end{align*}$$

It spits back the math block as above and strips the * BTW.

which happily works in any browser and MacDown and other markdown tools, doesn't render with any of the MathJax selections available in Marked. I must be doing something wrong?

thanks!

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Support Staff 1 Posted by

Bretton 16 Jul, 2017 07:21 PMYou may need to look at the additional MathJax configuration. The $$ separator isn't always recognized by default.

http://marked2app.com/help/MathJax.html#additionalmathjaxconfiguration

Let me know if that helps.

Thanks,

Brett

2 Posted by

brockon 16 Jul, 2017 08:09 PMhi

hmm. Thanks. I tried that actually. I think that just plain $$ works, but it’s the embedding within it of the latex environment that seems to confuse it.

I’ve not seen this behavior before with “all-in-one” markdown tools like Atom, MacDown, etc. So there’s something unusual in the MathJax implementation I think. It renders properly in a browser with a stock preamble MathJax setup.

I don’t know what all of the different choices are inside of Marked but I tried all of the MathJax versions.

thanks

Ray

On Jul 16, 2017, at 3:21 PM, Brett <[email blocked]<mailto:[email blocked]>> wrote:

Support Staff 3 Posted by

Bretton 18 Jul, 2017 05:27 PMFirst, are you certain the custom processor (pandoc) is working? There would be a green "light" icon at the bottom right of the preview window. For me, with the TeX-AMS-MML_HTMLorMML-full configuration, it works as is with both the built-in MultiMarkdown or with Pandoc as a custom processor.

4 Posted by

brockon 18 Jul, 2017 07:00 PMhi

Thanks, but no, I’m not sure that pandoc is working. I can make multimarkdown be respected and get the green light, but it fails. I’ve attached screen shots. Notice that multimarkdown fails for inaccessibility to the binary. Yes, I have the apple store version.

There’s also that strange “pipe” like vertical line at the end of each.

This renders fine in a browser.

Ray

[cid:2EDDF773-B08F-4DB3-9E9F-90A7278FAE6C]

[cid:879DDD58-65BB-4F60-9B59-3BFA32C3F722]

[cid:21B918DD-2853-4DAB-8D01-F2D66753978B]

[cid:21A9EA77-24F5-48D0-B4F5-C7D9814ED312]

[cid:C53BD9CC-D358-4B62-8BAB-DD86C0AE0A2D]

On Jul 18, 2017, at 1:27 PM, Brett <[email blocked]<mailto:[email blocked]>> wrote:

Support Staff 5 Posted by

Bretton 18 Jul, 2017 07:50 PMI'm sending you a cross-grade license via email. You'll need the direct version to run pandoc. We'll take another look after you try it with that version.

Regarding the line on the right, it's a known issue fixed in the next update.

6 Posted by

brockon 18 Jul, 2017 08:27 PMhi

Thanks. But same results for pandoc and for multimarkdown…no complaints from the processor and green lights for both.

But it’s something to do with the align environment maybe.

I added some fakes:

Putting them together, we then find:

$$\begin{align*}

F &=ma \\

E &=mc^2

\end{align*}$$

$$\begin{align}

F &=ma \\

E &=mc^2

\end{align}$$

$$\begin{aligned}

F &=ma \\

E &=mc^2

\end{aligned}$$

$$\begin{eqnarray*}

F &=ma \\

E &=mc^2

\end{eqnarray*}$$

$$\begin{eqnarray}

F &=& ma \\

E &=& mc^2

\end{eqnarray}$$

Three ways I know of to align equations. The last two are oldest, but frowned upon. The top two I think are in the AMS package, which I assume that the MathJax Marked 2 uses deploys?

Anyhow attached are the results. Where nothing works, it’s from multimarkdown. Where everyone lines up, it’s pandoc.

However I found the problem and it’s strange:

$$

\begin{align*}

\Delta p_{A} &= - \Delta p_{B} \\

p_{A} - p_{A,0} &= - (p_{B} -

p_{B,0}) \;\;\;\;\;\;\;\text{ rearrange these terms...} \\

p_{A,0} + p_{B,0} &= p_{A} + p_{B} \tag{pcon}\label{pcon} \end{align*}

$$

does not work, while:

$$\begin{align*}

\Delta p_{A} &= - \Delta p_{B} \\

p_{A} - p_{A,0} &= - (p_{B} -

p_{B,0}) \;\;\;\;\;\;\;\text{ rearrange these terms...} \\

p_{A,0} + p_{B,0} &= p_{A} + p_{B} \tag{pcon}\label{pcon} \end{align*}$$

does work.

I don’t think that’s quite optimal since many of us with LaTeX in our blood would always fence off the equation environment with the $$ standing alone I think.

Ray

[cid:7B127AB8-6A9F-46F8-A330-4644CFD1846B]

[cid:DE0E9580-D91A-4923-BE5B-FD880D0D6456]

On Jul 18, 2017, at 3:50 PM, Brett <[email blocked]<mailto:[email blocked]>> wrote: