fractionsspacing
How can I fix the vertical spacing between the numerator and the division symbol when entering fractions.
Eg. in the following code, the spacing between a and the division symbol is greater than one between b and the next (lower) division symbol.
\[ x = \dfrac{\dfrac{a}{b}}{c} \]
AMS alignments box and measure each cell anyway so you can check if the cell height is larger than a strut you can locally increase the strut height.
Code updated to use > instead of < so it opens up big entries not small ones:-)
Also does not do anything on first row to avoid adding space above the display.
\documentclass{article}
\usepackage{mathtools}% includes amsmath
\makeatletter
\newlength\minalignvsep
\def\align@preamble{%
&\hfil
\setboxz@h{\@lign$\m@th\displaystyle{##}$}%
\ifnum\row@>\@ne
\ifdim\ht\z@>\ht\strutbox@
\dimen@\ht\z@
\advance\dimen@\minalignvsep
\ht\strutbox\dimen@
\fi\fi
\strut@
\ifmeasuring@\savefieldlength@\fi
\set@field
\tabskip\z@skip
&\setboxz@h{\@lign$\m@th\displaystyle{{}##}$}%
\ifnum\row@>\@ne
\ifdim\ht\z@>\ht\strutbox@
\dimen@\ht\z@
\advance\dimen@\minalignvsep
\ht\strutbox@\dimen@
\fi\fi
\strut@
\ifmeasuring@\savefieldlength@\fi
\set@field
\hfil
\tabskip\alignsep@
}
\makeatother
\minalignvsep.15em
\begin{document}
\begin{minipage}[t]{0.20\linewidth}
\textbf{Nice}
\begin{align*}
x &= 73 \times 2\\
&= 146
\end{align*}
\end{minipage}%
%
\begin{minipage}[t]{0.25\linewidth}
\textbf{Not so nice}
\begin{align*}
x &= \frac{146}{10}\\
&= \frac{73}{5}
\end{align*}
\end{minipage}%
\bigskip\par\noindent
\textbf{Manual Tweak Options:}
\medskip\par\noindent
\begin{minipage}[t]{0.25\linewidth}
\textbf{Tweak jot}
\setlength{\jot}{8pt}% tweak
\begin{align*}
x &= \frac{146}{10}\\
&= \frac{73}{5}
\end{align*}
\end{minipage}%
%
\begin{minipage}[t]{0.30\linewidth}
\textbf{Add vertical space}
\begin{align*}
x &= \frac{146}{10}\\[5pt]% tweak
&= \frac{73}{5}
\end{align*}
\end{minipage}%
%
\begin{minipage}[t]{0.30\linewidth}
\textbf{spreadlines}
\begin{spreadlines}{0.8em}% tweak
\begin{align*}
x &= \frac{146}{10}\\
&= \frac{73}{5}
\end{align*}
\end{spreadlines}
\end{minipage}%
\end{document}
I'm not sure I'd split it that way but:
Markov evolution model defined by
\vspace{\abovedisplayskip}
\begin{minipage}[t]{0.45\columnwidth}%
\begin{equation}
\nu_{t}=\frac{\beta\nu_{t-1}}{\gamma_{t}}\label{eq:v_evolution}
\end{equation}
%
\end{minipage}%
\begin{minipage}[t]{0.45\columnwidth}%
\begin{equation}
\phi_{t}=\frac{\phi_{t-1}\gamma_{t}}{\beta}\label{eq:v_precision_evolution}
\end{equation}
%
\end{minipage}
\vspace{\belowdisplayskip}
for the var
Best Answer
Playing with math styles: