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I'm using bmatrix to display a simple matrix. Curiously, this does not work with a 1x11 matrix, while it does work with a 1x10 matrix:

This works just fine:

$$
\begin{bmatrix}
a_1 & a_2 & a_3 & a_4 & a_5 & a_6 & a_7 & a_8 & a_9 & a_{10} 
\end{bmatrix}
$$

while this 

$$
\begin{bmatrix}
a_1 & a_2 & a_3 & a_4 & a_5 & a_6 & a_7 & a_8 & a_9 & a_{10} & a_{11}
\end{bmatrix}
$$

fails with 

! Extra alignment tab has been changed to \cr. <recently read> \endtemplate 
l.255 ... & a_5 & a_6 & a_7 & a_8 & a_9 & a_{10} &
                                               a_{11}

What does this mean, why does this happen and how can I fix it?

I'm using pdfTeX, Version 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) on Ubuntu Trusty·

Mico
  • 506,678
mort
  • 1,671
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    Read from my lips: Don't use $$....$$ –  Jun 01 '15 at 12:49
  • @egreg: it is indeed a duplicate. I feel very stupid now. – mort Jun 01 '15 at 12:53
  • @ChristianHupfer: it was just a quick example ;) – mort Jun 01 '15 at 12:53
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    @mort Don't be afraid of asking. The worst that can happen is that the question is a duplicate: no big deal. – egreg Jun 01 '15 at 12:55
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    @mort -- in addition to what egreg says, sometimes duplicates can help others. not everyone phrases a question (or indeed thinks of it) in the same way, and searching isn't necessarily precise, so a different manner of expression provides more possibilities for something to be found. – barbara beeton Jun 01 '15 at 13:15

0 Answers0