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Please, how can i write

C i,j 

in LaTeX (i as an index and j an an exponent)?

I know just that:

C^j
C_i  
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Do you just want C_i^j? –  Ian Thompson Sep 9 '12 at 19:45
    
yes that's it $C_i^j$, thank you :) –  researcher Sep 9 '12 at 19:50
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1 Answer 1

up vote 7 down vote accepted

You can add a subscript and a superscript in sequence: $C_a^b$. If you need more than one character in a sub- or superscript, use braces. Thus, $C_{ab}$ produces a subscript ab, and $C_{a^b}$ produces a subscript a which itself has a superscript b.

\documentclass[12pt]{article}
\begin{document}
\[ C_a^b \quad C_{ab} \quad C_{a^b} \]
\end{document}

subscripts

(I used a and b because the last example doesn't work very well with i and j in the default font).

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