# Large \perp symbol and proper circled \perp symbol

Is there a command for a larger version of the symbol \perp used to denote perpendicularity? I have had a look at the Comprehensive LaTeX symbol list and didn't find a large version of this symbol.

Also, I would like to know whether the situation has changed since this question on a symbol for orthogonal sum as asked. I find the \obot and \bigobot just don't do the job for me.

• a circled perpendicular is in unicode at Ux2989, so it should be in the stix and xits fonts. there's no large perpendicular, but if you can supply a reference showing it in a published document from a recognized publisher, i will be happy to submit it to unicode for consideration. Dec 8 '13 at 15:26

This is what I can offer for a \bigperp command:

\documentclass{article}
\usepackage{amsmath}
\usepackage{graphicx}

\makeatletter
\newcommand{\bigperp}{%
\mathop{\mathpalette\bigp@rp\relax}%
\displaylimits
}

\newcommand{\bigp@rp}[2]{%
\vcenter{
\m@th\hbox{\scalebox{\ifx#1\displaystyle2.1\else1.5\fi}{$#1\perp$}}
}%
}
\makeatother

\begin{document}
$\displaystyle\bigperp\sum \textstyle\bigperp\sum \scriptstyle\bigperp\sum \scriptscriptstyle\bigperp\sum$

$\displaystyle\bigperp_{i=1}^{n} U_{i}$
\end{document}