Markdown equations alignment

Question

I am writing equations in wikidocs using markdown and latex. I tried to align the equations along the equal sign but I can't find the solution. The following is the latex that I wrote currently.

$$\begin{align}
Then,\ (x+z)+t & = x+(z+t)\ (\because Rule2) \\
& = x+0_V \\
& = x\ (\because Rule3) \\
\end{align}$$

The following is the resulted equation on the wikidocs. I found this link R Markdown Math Equation Alignment, but I still don't know what the problem is. Could you help me please?

score 6 · Answer 1 · answered Sep 15 '21 at 20:26

6

As $$...$$ establishes an equation math mode environment, as does \begin{align}, it is not possible to use the align environment inside $$...$$; it can only be used (in real LaTeX source, that is) outside math mode, because it wants to switch to math mode all by itself.

You should use \begin{aligned}...\end{aligned} — note ist's aligned, not align —, as that is an environment meant to be used inside math mode. As such it is suited for use inside the $$...$$ fencing.

answered Sep 15 '21 at 20:26

x a

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this works in joplin as well – Rafael May 25 '22 at 00:36
It works in vscode, however not in github. Any ideas how to make it work in github as well? – brownie Mar 23 '23 at 20:10

score 4 · Accepted Answer · answered May 13 '19 at 07:37

4

I ran your code on my system and it aligns just fine. Make sure you have the latest version of tools and packages installed. A minimal working example would be useful too.

answered May 13 '19 at 07:37

Tom

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Plain text in math mode has to be put in `\text{…}` if available (`amsmath`) or at least wrapped into an `\mbox{…}`. Otherwise you end up in text rendered as math variables, i.e. in italics (as you can see in the demo renderings). That is not good practice. – x a May 05 '23 at 20:47

Markdown equations alignment

2 Answers2