Math & Science ⇒ Vertical and horizontal centering of formulars

[masoher]

Hi,

i created a table comprising mathematical formulars. But these formulars seem to stick at the bottom of each cell and that makes the whole tabular ugly.

Here is the table:

Code: Select all

\begin{tabular}{|l|l|l|l|l|l|}	
  \hline \multicolumn{2}{|c|}{Kriterium}  & \multicolumn{2}{|c|}{Konvergenz} & \multicolumn{2}{|c|}{Divergenz} \\
  \hline Bezeichnung & Formel & notw. & hinr. & notw. & hinr. \\
  \hline Cauchy & $\displaystyle\left|\sum_{n=1}^{\infty}{a_n}\right|<\varepsilon$ & X & X & & \\
  \hline Leibniz & $\displaystyle\left\{\begin{array}{l} b_n\geq0\\{\displaystyle\lim_{n\to\infty}b_n = 0}\end{array}\right\} a_n :=(-1)^{n+1}b_n$  & & X & & \\
  \hline Majoranten & $\displaystyle\left|{a_n}\right|\leq{b_n}; \sum_{n=1}^{\infty}{b_n}$ konv & & ABS & & \\
  \hline Minoranten & $\displaystyle{0}\leq{b_n}\leq{a_n}$ ffa $\displaystyle n\in\mathds{N};\sum_{n=1}^{\infty}{b_n}$ div  & & & & X \\
  \hline \multirow{2}{*}{Quotienten} & $\displaystyle {\limsup_{x\to\infty}}\left|{\frac{a_{n+1}}{a_n}}\right| < 1$ & & ABS & & \\
  \cline{2-6} &  ${\displaystyle {\limsup_{x\to\infty} }\left|{\frac{a_{n+1}}{a_n}}\right| > 1}$ & & & & X \\
  \hline \multirow{3}{*}{Wurzel} & $\displaystyle\sqrt[n]{\left|{a_n}\right|}$ unbeschr\"{a}nkt & & & X & \\
  \cline{2-6} & $\displaystyle\limsup_{n\to\infty}{\sqrt[n]{\left|{a_n}\right|}}<1$ & & ABS & & \\
  \cline{2-6} & $\displaystyle\limsup_{n\to\infty}{\sqrt[n]{\left|{a_n}\right|}}>1$ & & & & X \\
  \hline Limes & $\displaystyle\lim_{n\to\infty}{a_n=0}$ & X & & & \\
  \hline
\end{tabular}

Basically I want all cell-contents to be vertically and horzontally centered.

Ideas for improvement ?

I just began writing Latex (Yesterday ) and it's my first post in this forum, so please excuse me in case I did something 'newbish' .

Greetings

[frabjous]

Could you produce a complete minimal working example -- i.e., one that can be compiled on its own, with a document class and preamble, etc. When I try to insert your snippet into a minimal document, it does not compile; I get "undefined command sequence" errors. More likely than not, this is because you are using commands defined by some package, and it's difficult to try to guess what those packages are.

[masoher]

Stupid me.

I hope it's minimal enough:

Code: Select all

\documentclass[a4paper,10pt]{article}
%\documentclass[a4paper,10pt]{scrartcl}

\usepackage[utf8x]{inputenc}
\usepackage{amsmath}
\usepackage{dsfont}
\usepackage{multirow}
\usepackage{geometry}

\geometry{a4paper,left=36mm,right=36mm}

\renewcommand{\arraystretch}{1.6}

\begin{document}
\title{Grenzwertanalyse von Reihen der Form $\displaystyle\sum_{n=1}^{\infty}{a_n}$}
\maketitle

\begin{tabular}{|l|l|l|l|l|l|}	
  \hline \multicolumn{2}{|c|}{Kriterium}  & \multicolumn{2}{|c|}{Konvergenz} & \multicolumn{2}{|c|}{Divergenz} \\
  \hline Bezeichnung & Formel & notw. & hinr. & notw. & hinr. \\
  \hline Cauchy & $\displaystyle\left|\sum_{n=1}^{\infty}{a_n}\right|<\varepsilon$ & X & X & & \\
  \hline Leibniz & $\displaystyle\left\{\begin{array}{l} b_n\geq0\\{\displaystyle\lim_{n\to\infty}b_n = 0}\end{array}\right\} a_n :=(-1)^{n+1}b_n$  & & X & & \\
  \hline
\end{tabular}

\end{document}