Math & Science ⇒ Alignment question about \overbrace{}^{}

[haha8888]

Hi guys,

I have a question about how to make the overbrace line up on the same horizental. See the attached example. You can see because of the exponent, the overbrace over these components cannot be aligned. Can anyone have some good idea to sort it out? Many thanks

BTW, why can't I post the sample image like jpg (I can't use upload attachment privillage?)

Donald

[Stefan Kottwitz]

Hi Donald,

you could post the code which produces the undesired alignment, so we could help to fix it.

Stefan

[haha8888]

Hi Stefan,

Thanks for the suggestion. My code is as follows:

Code: Select all

\[
\begin{array}{l}
\overbrace{\fbox{\raisebox{0ex}[2\height]{$\alpha^{(1)}\overrightarrow{e}_1^{(1)}$,}}}^{n_{1}}
        \overbrace{~~\fbox{\raisebox{0ex}[2\height]{$0^{n_{1}}$,}}~~}^{n_{1}}
\end{array}
\]

You see the result is not so good. I want make the overbrace line up horizentally ( on the same level). I set the same height "2" in the raisebox. The height should be the same for two boxes, why did I get different height in the result? Thanks!

Donald

[Stefan Kottwitz]

Hi Donald,

you could use an invisible vertical line in the argument of \overbrace, such as:

Code: Select all

\[
\begin{array}{l}
\overbrace{\rule{0pt}{6ex}\fbox{\raisebox{0ex}[2\height]{$\alpha^{(1)}\overrightarrow{e}_1^{(1)}$,}}}^{n_{1}}
\overbrace{\rule{0pt}{6ex}~~\fbox{\raisebox{0ex}[2\height]{$0^{n_{1}}$,}}~~}^{n_{1}}
\end{array}
\]

Stefan

[haha8888]

Thanks so much. It's just what I want!