# Jupyter Notebook Latex Conversion Fails: Escaped $and other symbols? Trying to convert an R notebook into a (download as) pdf; the LateX conversion fails with this part of the error seemingly relevant: ! LaTeX Error: \mathbf allowed only in math mode. See the LaTeX manual or LaTeX Companion for explanation. Type H <return> for immediate help. ... l.284 Show that \$ (\mathbf A
\mathbf B)\^{}T = \mathbf B\^{}T
?
! Emergency stop.


The Markdown cell in question looks like so:

## Question 1
Show that
$(\mathbf A \mathbf B)^T = \mathbf B^T \mathbf A^T$ for matrices $\mathbf A \in \mathbb R^{m \times n}$ and $\mathbf B \in \mathbb R^{n \times l}$ by writing componentwise.


It appears as though between the Markdown cell and LateX input, the $ sign was escaped, and LateX now doesn't recognize it. In fact, it also looks like other symbols, like the caret ^, are being escaped, too. Am using Windows 8, Chrome version 58.0.3029.81, Jupyter version 4.2.0, Jupyter Notebook version 4.2.3. How can I correct this? • Apparently, the converter considers an isolated $ as something that should become \$, as you can see in the error message. Apr 28, 2017 at 17:21 ## 1 Answer After some inspection, I noticed that the problem was the space after the $ sign - this:

$(\mathbf A \mathbf B)^T = \mathbf B^T \mathbf A^T$


needs to be like so:

$(\mathbf A \mathbf B)^T = \mathbf B^T \mathbf A^T$


and so on. It seems that MathJax has no problem with it, but nbconvert needs this format.