Math & Science ⇒ Command for custom Symbol

[financialwar]

Hello.

Does anyone know the command for the symbol in the attached picture?

[tommytex]

hi,

why don't you define a new command to insert the symbol using includegraphics?

Code: Select all

\newcommand{\ai}{
 {\mathchoice
  { \includegraphics[height = 1.6ex]{yoursymbol}}
  { \includegraphics[height = 1.6ex]{yoursymbol}}
  { \includegraphics[height = 1.2ex]{yoursymbol}}
  { \includegraphics[height = 0.9ex]{yoursymbol}}
 }}

works properly on my tex system

[Stefan Kottwitz]

\includegraphics is a good idea if the a symbol is in pdf or eps format. A bitmap could be blurry.

When I need such special things, I use TikZ, since I know how to draw with it, also inline. Here, I would define an operator for example like this:

Code: Select all

\documentclass{article}
\usepackage{tikz}
\DeclareRobustCommand{\newop}[2]{%
  \vcenter{\hbox{\tikz[node distance=2.5ex]{%
    \node (nominator) {\scriptsize $#1$};
    \node[below of=nominator] {\scriptsize $#2$};
    \draw[shorten <=0.5ex, shorten >=0.5ex, yshift=0.5ex]
      (current bounding box.west) -| (current bounding box.south east);
}}}}
\begin{document}
\[
    a\newop{i}{4} \qquad b\newop{i+j}{10}
\]
\end{document}

The line length is adjusted to width and height, for varying symbol dimensions.

symbol.png (2.23 KiB) Viewed 6686 times

Change some dimensions if you like. I already used dimensions relative to the font size for automatic fitting.

Stefan

[tommytex]

Nice One, Stefan!

I sometimes use this WYSIWYG-tool to optimize my drawings:

http://www.tikzedt.org/index.html

greez, tommy