Math & Science ⇒ Fraction without Bar

[andremelzi]

Hi. How can I write a fraction without the bar? Like this:

helmholtz.png (3.99 KiB) Viewed 26106 times

Thanks!

[localghost]

The amsmath package provides the \genfrac command which allows to create your own fractional structures. So you can build an own fraction very easy.

Code: Select all

\documentclass[11pt]{article}
\usepackage[T1]{fontenc}
\usepackage{mathtools}   % loads »amsmath«

\newcommand*{\bfrac}[2]{\genfrac{\lbrace}{\rbrace}{0pt}{}{#1}{#2}}

\begin{document}
  \[
    \left(\nabla^2+n^2(x)\,k^2\right)\bfrac{E}{K}=0
  \]
\end{document}

The package manual has the details. For instant access open a command line.

Code: Select all

texdoc amsmath

Your example has probably been done with an array environment enclosed by curly braces. For more about math typesetting refer to the excellent »Math mode« document.


Best regards and welcome to the board
Thorsten

[andremelzi]

Thank you!
Best regards,

André