Can't make \geqq

[blop]

I use Kile as editor where I can choose >= as \geqq, but it will not
compile:

[LaTeX] test.tex => test.dvi (latex)
[LaTeX] finished with exit status 1
./test.tex:21:Undefined control sequence. $\geqq
[LaTeX] 1 error, 0 warnings, 0 badboxes

If I instead try:

$\geq$ it works fine but that does not use double underline.

\documentclass[a4paper,12pt]{article}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[danish]{babel}
\usepackage{graphicx}
\usepackage{verbatim}
%\usepackage[active]{srcltx}
\usepackage[top=20mm]{geometry}
\usepackage{amsmath}
\input{mydefs}

\pagestyle{headings}
\author{author}
\title{title}
\begin{document}
\maketitle
\subsection*{blop}

$\geqq$

\end{document}

any ideas?

[Ulrike Fischer]

"blop" <fede...@yahoo.dk> schrieb:

> I use Kile as editor where I can choose >= as \geqq, but it will not
> compile:
>
> [LaTeX] test.tex => test.dvi (latex)
> [LaTeX] finished with exit status 1
> ./test.tex:21:Undefined control sequence. $\geqq
> [LaTeX] 1 error, 0 warnings, 0 badboxes

Wenn LaTeX tells you a control sequence is undefined you have in most
cases either misspelled the command or forgotten to load the package
that defines it:

\usepackage{amssymb}

--
Ulrike Fischer
e-mail: zusätzlich meinen Vornamen vor dem @ einfügen.
e-mail: add my first name between the news and the @.