emphasisenvironments
Is there redefine the way emph behaves in the definition environment?
Right now, since definition is in italics, emph just makes the text non-italic which is not enough to make it stand out. Is there a way to switch to be bold if and only if emph is used within the definition environment?
Following the suggestions made by Daleif I added the package fixltx2e and got rid of the previous error and everything seemed to work.
However, when I added a definition environment, I noticed that \emph{} was still using italics in this environment (and bold in the theorem environment).
So I proceeded to use the package etoolbox and replaced the command line
\renewcommand\eminnershape{\bfseries} with
\AtBeginEnvironment{definition}{\renewcommand\eminnershape{\bfseries}}
which also didn't work (although it works also fine with the theorem environment).
Finally, noticing that in this last command line we're inside the definition environment, I though that we don't need eminnershape since it is for all instances of em that occur there.
As a wild guess, I replaced eminnershape with em and it worked.
Now I'm not very confident of this approach because I'm afraid it is not very solid (even though it's working, and that's not only with this minimal example). So if someone reads this and knows better than me, please tell me about the issues that may arise.
Here's a full working example:
\documentclass{book}
\usepackage{amsmath,amsthm,fixltx2e,etoolbox}
\newtheorem{theorem}{Theorem}
\theoremstyle{definition}
\newtheorem{definition}[theorem]{Definition}
\AtBeginEnvironment{definition}{\renewcommand\em{\bfseries}}
\begin{document}
Here's my \emph{message} to the world:
\begin{definition}
This is \emph{my} definition.
\end{definition}
\begin{theorem}
And this is \emph{my} theorem.
\end{theorem}
\end{document}
and its result:
siunitx has never detected \mathbf. But you can change the font by setting the math-rm-key:
\documentclass[12pt]{scrartcl}
\usepackage{siunitx}
\begin{document}
\begin{equation}
V= \frac{0,0003257}{150\cdot 99,96}= \num[math-rm=\mathbf]{2.1723e-8}
\end{equation}
\end{document}
Best Answer
On modern LaTeX systems you can use
to change the way
\emphbehaves in an italic context.If you only want it for
definitions, include theetoolboxpackage and