Math & Science ⇒ Undefined Control Sequence.

[tempotempo]

Hello folks,

I am encountering an annoying !Undefined control sequence error that somehow appears within my document (about 200 times)
Here is an example for it:

Code: Select all

\begin{equation}\label{eq:capm}
r_{i,t} = \alpha_i + \beta_{i,1} \m{f}_{1,t} + \ldots + \beta_{i,K} \m{f}_{K,t} + \epsilon_{i,t}, 
\end{equation}

\m{} is used with the T4 package to typeset African style letters. However,

[Stefan Kottwitz]

Hi,

welcome to the board!

Perhaps tell us the complete error message, since TeX tells you exactly which control sequence in undefined.

Stefan

[tempotempo]

Alright, here it comes:

<pdflatex> ! Undefined control sequence.
<pdflatex> l.32 ...i,1} \m{f}_{1,t} + \ldots + \beta_{i,K} \m{f}_{K,t} + \epsilon_{i,t},

As indicated before, this expression is part of a function, and \m{f} is used to typeset a phonetical f based on African fonts. If there is a better way to typeset this f, I would be more than pleased to use it...

[Stefan Kottwitz]

There's no further line break in the error message? Have a look at this example:

Code: Select all

! Undefined control sequence.
l.6     r_{i,t} = \alpha_i + \beta_{i,1} \m
                                           {f}_{1,t} + \ldots + \beta_{i,K} ...

Here is the line break exactly at the error position \m, which is unknown in my file, of course. Where is the corresponding line break in your error message? Which is the last control sequence or command, respectively, in the corresponding error line?

Stefan