I have previously used some code from here to produce a symbol to represent the conditionally independence of some variables. Does anyone know a method for generating a symbol for `not conditionally independent`

. That is, the symbol below but with a forward slash through the symbol netween `a`

and `c`

. Thank you.

some code

```
\documentclass{article}
\usepackage{amsmath}
\usepackage{graphicx}
\begin{document}
% function for conditional independence - from link above
\newcommand{\bigCI}{\mathrel{\text{\scalebox{1.07}{$\perp\mkern-10mu\perp$}}}}
a $\bigCI$ c $\mid$ b
\end{document}
```

which produces

## Best Answer

I'm not sure about the advantage of scaling the symbol by 7%. I propose the definitions for both the scaled and unscaled symbol.