Possible Duplicate:
Using braces to label parts of an equation
How do I put horizontal curly braces beneath and over parts of a formula? I tried to use \stackrel and \mathtop, but it did not work.
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1I have found. I should use \overbrace{}^{} and \underbrace{}^{}.– ashimFeb 29, 2012 at 17:52
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Thanks for telling us that you found it! I closed it as a duplicate, since we had such a question already (several times).– Stefan Kottwitz ♦Feb 29, 2012 at 18:05
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1 Answer
You can try the following commands:
\overbrace{your-formula}^\text{your comment}
\underbrace{your-formula}_\text{your comment}
An example that I took from Wikibooks:
\[
z = \overbrace{
\underbrace{x}_\text{real} +
\underbrace{iy}_\text{imaginary}
}^\text{complex number}
\]
Their result:
Don't forget to add
\usepackage{amsmath}
at the beginning of your document
