# Latex table error

I can not see what i wrong with my table code

\begin{tabular}{l*{11}{c}r}
& A & B & C & D & E & F & G & H\\
\hline
A & 0_A & 4_A & \infty & 5_A & 6_A & \infty & \infty & \infty\\
B & & 4_A & 14_B & 5_A & 6_A & \infty & \infty & \infty\\
D & & & 10_D & 5_A & 6_A & 12_D & 9_D & \infty\\
E & & & 10_D & & 6_A & 8_E & 7_E & \infty\\
G & & & 10_D & & & 8_E & 7_E & 12_G\\
F & & & 9_F & & & 8_E & & 12_G\\
C & & & 9_F & & & & & 11_C\\
H & & & & & & & & 11_C
\end{tabular}

• tabular entries are in text but you have math expressions, you want array not tabular. – David Carlisle Feb 27 '17 at 14:19
• Thanks!, the table works fine in tabular with the first 3 rows, – asd123321dsa Feb 27 '17 at 14:22
• Ehm, no, it doesn't. Exactly what error do you get? Replace tabular with array as @DavidCarlisle suggested, and place the whole thing in math mode (add $ before \begin{array}, and $ after \end{array}) if you haven't already. – Torbjørn T. Feb 27 '17 at 14:33

Your given code results in several warnings that an $is missing. So your given code can not work fine. You have two possibilities to solve the issue: 1. Add $ arround the mathematical parts in the table, like $\infty$ and $0_A$ etc.
2. Use environment array, which has to be used in mathematical mode, started with $, ended with $. To keep the letters in the first row and column upright, I used command \mathrm{A} etc.

The following MWE shows both solutions:

\documentclass{article}

\begin{document}
First possibility:

\begin{tabular}{l*{7}{c}r}
& A     & B     & C        & D     & E     & F        & G        & H\\
\hline
A & $0_A$ & $4_A$ & $\infty$ & $5_A$ & $6_A$ & $\infty$ & $\infty$ & $\infty$\\
B &       & $4_A$ & $14_B$   & $5_A$ & $6_A$ & $\infty$ & $\infty$ & $\infty$\\
D &       &       & $10_D$   & $5_A$ & $6_A$ & $12_D$   & $9_D$    & $\infty$\\
E &       &       & $10_D$   &       & $6_A$ & $8_E$    & $7_E$    & $\infty$\\
G &       &       & $10_D$   &       &       & $8_E$    & $7_E$    & $12_G$\\
F &       &       & $9_F$    &       &       & $8_E$    &          & $12_G$\\
C &       &       & $9_F$    &       &       &          &          & $11_C$\\
H &       &       &          &       &       &          &          & $11_C$
\end{tabular}

Second possibility:

$\begin{array}{l*{7}{c}r} & \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} & \mathrm{E} & \mathrm{F} & \mathrm{G} & \mathrm{H}\\ \hline \mathrm{A} & 0_A & 4_A & \infty & 5_A & 6_A & \infty & \infty & \infty\\ \mathrm{B} & & 4_A & 14_B & 5_A & 6_A & \infty & \infty & \infty\\ \mathrm{D} & & & 10_D & 5_A & 6_A & 12_D & 9_D & \infty\\ \mathrm{E} & & & 10_D & & 6_A & 8_E & 7_E & \infty\\ \mathrm{G} & & & 10_D & & & 8_E & 7_E & 12_G\\ \mathrm{F} & & & 9_F & & & 8_E & & 12_G\\ \mathrm{C} & & & 9_F & & & & & 11_C\\ \mathrm{H} & & & & & & & & 11_C \end{array}$
\end{document}


resulting in the following pdf page: • This is a good answer, but since all columns which have mathematical parts to them have mathematical parts in every row, you could just go ahead and use the array package and >{$}c<{$} as the column specifier. That would save you have to add $...$ around every entry in a column – Au101 Feb 27 '17 at 21:34
• If you want to keep the letters in the first row upright, you could of course go ahead and use \mathrm{A}, \mathrm{B} etc. or equivalent. I think it would be easier to correct the first row than all other rows – Au101 Feb 27 '17 at 21:35
• You don't need the array package for the array environment, try e.g. \documentclass{article}\begin{document}$\begin{array}{c}a\end{array}$\end{document}. – Torbjørn T. Feb 27 '17 at 21:51