Theta hat dot: upright and bold
I suggest you load both the upgreek
(gulp...) and bm
packages along with amsmath
and write something along the lines of the code shown below.
\documentclass{article}
\usepackage{amsmath,upgreek,bm}
\begin{document}
$\dot{\bm{\hat{\uptheta}}},
\dot{\hat{\uptheta}},
\dot{\hat{\theta}}$
\end{document}
Stack a dot on top. The gap (currently .5pt
) is adjustable with the optional argument to \stackon
. EDITED to take Mico's advice (except with +/-1.3 mu instead of 1.5).
\documentclass{article}
\usepackage{mathtools}
\usepackage{scalerel,stackengine}
\stackMath
\newsavebox{\foobox}
\newcommand{\slantbox}[2][0]{\mbox{%
\sbox{\foobox}{#2}%
\hskip\wd\foobox
\pdfsave
\pdfsetmatrix{1 0 #1 1}%
\llap{\usebox{\foobox}}%
\pdfrestore
}}
\newcommand\unslant[2][-.25]{%
\mkern1.3mu%
\ThisStyle{\slantbox[#1]{$\SavedStyle#2$}}%
\mkern-1.3mu%
}
\newcommand{\utheta}{\mathord{\unslant\theta}}
\begin{document}
$\boldsymbol{\hat{\utheta}}$
and this
$\stackon[.5pt]{\boldsymbol{\hat{\utheta}}}{.}$
\end{document}
\documentclass{article}
\usepackage{mathtools,bm}
\usepackage{scalerel}
\newsavebox{\foobox}
\newcommand{\slantbox}[2][0]{\mbox{%
\sbox{\foobox}{#2}%
\hskip\wd\foobox
\pdfsave
\pdfsetmatrix{1 0 #1 1}%
\llap{\usebox{\foobox}}%
\pdfrestore
}}
\newcommand\unslant[2][-.25]{%
\mkern1mu%
\ThisStyle{\slantbox[#1]{$\SavedStyle#2$}}%
\mkern-1mu%
}
\newcommand{\utheta}{\unslant\theta}
\begin{document}
$\dot{\boldsymbol{\hat{{\utheta}}}}$ $\boldsymbol{\dot{\hat{{\utheta}}}}$
\end{document}