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When I try to export in pdf a R Markdown file I get the following mistake:

! Missing { inserted. <to be read again>

The concerned line is this one:

$$
AIC = ln \hat{\sigma}^{2}_\hat{u_t} + \frac{2n_k}{T}
$$

I do not get what is wrong with the way I structure the formula. FYI when I export in .doc it works fine, so all the problems start when I try no knit on pdf!

Anyone has suggestions??

Dorianeve
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1 Answers1

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It's having trouble with your complicated subscript, \hat{u_t} -- try enclosing that entire term in { }.

Aaron Montgomery
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