[Tex/LaTex] Centering an equation vertically

beamerequationspositioning

I would like to put an equation at the center of a page in beamer (viewing the page from top to bottom rather than left to right – I already know how to center an equation going from left to right). I would also like to have some text above the equation. How can I do both at once?

Best Answer

beamer frames are vertically centered by default unless you have \documentclass[t]{beamer} or \begin{frame}[t].
You can use \vfil and \vfill to accomplish a vertically centered equation and some text that is vertically centered between the top and the equation.

Code

\documentclass{beamer}
%\usepackage{lua-visual-debug} % used to show output debug
\begin{document}
\begin{frame}{Title}
Text over equation
\vfill
\(equatio^n\)
\vfill
\end{frame}
\end{document}

Output

output without lua-visual-debug output with lua-visual-debug

Is this what you want?

Related Solutions

[Tex/LaTex] How to ‘center’ ‘page number’ in beamer slides

This template produces centered page numbers in the footline:

\defbeamertemplate{footline}{centered page number}
{%
  \hspace*{\fill}%
  \usebeamercolor[fg]{page number in head/foot}%
  \usebeamerfont{page number in head/foot}%
  \insertpagenumber\,/\,\insertpresentationendpage%
  \hspace*{\fill}\vskip2pt%
}
\setbeamertemplate{footline}[centered page number]

It's similar to the original template. The method is using \hspace*{\fill} before and after the numbers. (\hfill at the end instead would not help.)

Here's a complete example centering the title in the frame middle together with text in the left and in the right corner. It shows how you could use \makebox or \llap and \rlap to change a text's width to 0pt, thus allowing centering of other text.

\documentclass{beamer}
%
\defbeamertemplate{headline}{my header}{%
\vskip1pt%
\makebox[0pt][l]{\,\insertsection}%
\hspace*{\fill}\insertshorttitle\hspace*{\fill}%
\llap{\insertpagenumber\,/\,\insertpresentationendpage\,}
}
\setbeamertemplate{headline}[my header]
%
\title{Presentation Title}
\begin{document}
\section{Test Section}
\begin{frame}{}
\centering
$\star$

This is a test.
\vfill
\end{frame}
\end{document}

alt text

[Tex/LaTex] Horizontal spacing after equation

How does the following look?

\begin{align*}
  \alpha+\beta\sum_{j=1}^{m}x_{ij}  &=1&     &\text{for}\ i = 1,2,\ldots,n\\
  \sum_{i \in P_k}x_{ij}            &\leq1&  &\text{when}\ j = 1,2,\ldots,m \text{;}\ \forall k
\end{align*}

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