Math & Science ⇒ space around equation

[matthes]

Hello,

I am trying to get control over the white spaces LaTeX puts around an equation environment. I am using fleqn, so I tried \topsep instead of \abovedisplayskip, but neither of the two worked.
Thanks in advance your your help!


Here is a minimum example:

Code: Select all

\documentclass[a4paper]{article}%
\usepackage[colorlinks,linkcolor=cyan]{hyperref}
\usepackage[ngerman]{babel}
\usepackage[leqno,fleqn]{amsmath}
\usepackage[noheadfoot,nomarginpar,margin=3cm]{geometry}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}%
\setcounter{MaxMatrixCols}{30}
\providecommand{\U}[1]{\protect\rule{.1in}{.1in}}
\setlength{\mathindent}{2cm}
\setlength{\parindent}{0cm}
\newenvironment{proof}[1][Proof]{\noindent\textbf{#1.} }{\ \rule{0.5em}{0.5em}}
\renewcommand{\theequation}{\thesection.\arabic{equation}}
\makeatletter\@addtoreset{equation}{section}\makeatother
\renewcommand{\theHequation}{\theHsection.\arabic{equation}}
\renewcommand{\equationautorefname}{Formel}
\topsep=opt

\begin{document}
Faktorisierung eines Polynoms mit den reellen Nullstellen $x_1, \hdots, x_m$ mit den Vielfachheiten 
\begin{equation}
P_n(x)=\sum \limits^{n}_{k=0} a_kx^k = a_n \prod \limits_{l=1}^{m} (x-x_1)^{k_l} \label{f4.14}
\end{equation}
Nullstelle $x_0$ hat \bf Vielfachheit \rm $k$, wenn $f(x)$ ohne Rest durch $(x-x_0)^k$, aber nicht durch $(x-x_0)^{k+1}$ teilbar ist
\end{document}

[phi]

The spacing is controlled by \abovedisplayskip and \abovedisplayshortskip. The problem here is that the standard classes reset these lengths whenever the font size is changed. So instead of setting them directly, add your changes to the commands \normalsize, \small and so on:

Code: Select all

\addto{\normalsize}{\setlength{\abovedisplayskip}{20ex}}

[matthes]

That works fine, thanks a lot!!