Too much spacing between formula and text in beamer. When I insert the command \vspace{-0.5cm} before the formula, the spacing decreases. But the command \vspace{-0.5cm} after the formula has no effect on the spacing between the formula and the text after it. How to solve it?
[Tex/LaTex] How to decrease the vertical spacing between formula and text in beamer
beamerspacing
Related Solutions
Here's a solution that doesn't require the use of additional packages. The new command, \vertiii, takes one argument; the triple vertical bars resize automatically depending on the size of the argument. For the MWE below, I've actually set the spacing between the vertical bars to be slightly less than what's generated by \[l,r]Vert -- you can adjust the spacing to suit your taste by changing the value of the argument of the four \kern commands.
Addendum: I've modified the code -- by inserting curly braces around the entire command -- to allow for the use of the command \vertiii in subscripts and superscripts as well.
\documentclass{article}
\usepackage{amsmath,amssymb}
\newcommand{\vertiii}[1]{{\left\vert\kern-0.25ex\left\vert\kern-0.25ex\left\vert #1
\right\vert\kern-0.25ex\right\vert\kern-0.25ex\right\vert}}
\begin{document}
$\vertiii{a}$,
$\vertiii{\int_0^1 a(x)\,\mathrm{d}x}$,
$\displaystyle \vertiii{\int_0^1 a(x)\,\mathrm{d}x}_\vertiii{b}$
$\lVert a \rVert$ (for comparison)
$c_\vertiii{d}$, $f^\vertiii{g}$
\end{document}
If you truly believe that the default values of the length parameters \abovedisplayskip and \belowdisplayskip make LaTeX insert a bit too much vertical whitespace above and below a displayed equation, you could reduce those values a bit. E.g.,
\addtolength\abovedisplayskip{-1ex}
\addtolength\belowdisplayskip{-1ex}
Don't go overboard, though.
Do also follow barbara beeton's advice not to leave blank lines above and below the code that defines the displayed equations. And, if your document loads the setspace package and uses a spacing setting other than \singlespacing, do load the package with the option nodisplayskipstretch. Doing so turns off line stretching before and after displays. If your document uses \doublespacing you'll notice a huge effect.
Best Answer
You can influence the spacing with
\abovedisplayshortskipand\belowdisplayshortskip. However the default spacing above the equations is already pretty tight, I would not decrease it further.