[Tex/LaTex] LyX AMS align environment justification/ horizontal alignment

alignhorizontal alignmentlyxmath-mode

I'd like to know how to justify individual columns in the AMS align environment. In the matrix environment, the Table toolbar buttons are active, but not inside the AMS align environment.

Best Answer

The alignment of the columns of an align environment is fixed. It's like rl for each pair of columns. That's why the toolbar buttons are disabled.

If you would like to have different adjustment, you could use an array environment, especially if you don't need numbered rows.

However, you may change the alignment by placing the & symbol differently. This might be better with alignat instead of align.

Related Solutions

[Tex/LaTex] AMS Split inside AMS Align

I don't know what you are trying to achieve. Your error message can be bypassed if you either increase the number of reference points in the alignat

\begin{alignat*}{2}
= & \begin{split} x+ \\
y\end{split}
\end{alignat*}

or if you use aligned instead of split

\begin{alignat*}{1}
= & \begin{aligned} x+ \\
y\end{aligned}
\end{alignat*}

With split, it tries to anchor its & to line up with the ones outside (so multiple splits inside one equation will line up). So implicitly you need one extra reference point if you use split inside alignat, which is just a glorified array. (I'm doing a horrible job explaining this, am I not?) aligned doesn't try to do that (two aligned blocks inside one equation won't line up), and so you can get by with just one reference point.

In anycase, either of this sets the broken expression x+y as one unit to the right, vertically centered, against the = sign, which I suspect may not be what you want. If you want the = to line up with the x+ and with the y in a line below, you should take Lev's suggestion.

[Tex/LaTex] AMS align / Align multiple “=”, too much space

The ampersand & does not only mark alignment positions, it further separates columns. So, with alignat, your example could look like:

\begin{alignat}{2}
A &= B & &= C \\
D &= E & &= F
\end{alignat}

The agument to alignat stands for the number of columns.

Best Answer

Related Solutions

[Tex/LaTex] AMS Split inside AMS Align

[Tex/LaTex] AMS align / Align multiple “=”, too much space

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