If two random variables and are independent of each other, it is common to write it as

It appears that there isn’t a built-in LaTeX command for . The reference below presents several possible ways to reproduce this symbol. My personal favorite is the following:

\newcommand{\indep}{\perp \!\!\! \perp}

You can then use the new command wherever you want the independence symbol, e.g. `X \indep Y`

.

References:

- StackExchange. double perpendicular symbol (for independence).

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