I'd like to ask how in align environment to number only one of the equations.
\begin{aligned}
\mathsf{E}[W^{i}_{t}-W^{i}_{s}]&=0,\\
\mathsf{E}\big[[W^{i}_{t}-W^{i}_{s}][W^{j}_{t}-W^{j}_{s}]\big]&=q_{ij}(t-s),\quad
1\le i,j\le n,\, 0\le s<t.
\end{aligned}
One more question. (The first one has already been sorted out). How can I break page in the align environment?
Best Answer
The
aligned
environment is a subsidiary math environment and thus can be used within another math environment. For example:This automatically numbers the entire aligned group. But if you are just using it within
$ $
or\[ \]
there is no numbering. Hence, to get the numbering right, rather use the thealign
environment as follows:Notice the employment of the
\notag
command to remove the numbering on desired lines.This yields:
To work with the page breaks for the align environment, one can use
\allowdisplaybreaks
. For example:This gives: