When using AMSmath and trying to put a \dot
over a \vec
of a bold symbol it works, but subsequent instances have a tilde instead of a vector over the bold symbol, and strangely my partial wrt become bold. If I don't use AMSmath, this works. I have tried many variants with extra brackets or interchanged orders, but nothing seems to fix this bug. Here is a tex snippet that reproduces the problem on the second row, the third row when preceding {\vec E}
with \bf
produces only tildes instead of vectors, but the \dot
make the D
not be bold.
Any ideas what I am missing?
\documentclass [12pt] {article}
\usepackage{amsmath,amssymb}
%\let\vec\relax
%\DeclareMathAccent{\vec}{\mathord}{letters}{"7E}
\newcommand{\pdt}[1]{\frac{\partial^{#1}}{\partial t^{#1}}}
\begin{document}
\LARGE
$
\vec E \cdot \dot{{\vec D}} =
\vec E \cdot \pdt{} (\epsilon \vec E )
$
$
\vec {\bf E} \cdot \dot {\vec {\bf D}} =
\vec {\bf E} \cdot \pdt{} (\epsilon \vec {\bf E} )
$
$
{\bf {\vec E}} \cdot \dot{ {\bf {\vec D}}} =
{\bf {\vec E}} \cdot \pdt{} (\epsilon {\bf {\vec E}} )
$
\end{document}
Best Answer
The following should work:
PS: Since you are in math mode, it is better to use
\mathbf
instead of\bf
.