Is there a symbol for "dependent"?

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For random variables $A$ and $B$, $A \perp B$ is sometimes used to denote "A is independent of B". Is there a symbol that is commonly used to mean "A is not independent of B"?

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3 Answers

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From: Wasserman, L. (2013). All of Statistics: A Concise Course in Statistical Inference, Springer.

Wasserman uses a coil symbol. I have not found the Latex symbol, yet.

From List of Symbols

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Independence is denoted $\perp \!\!\! \perp$ not orthogonal $\perp $. Use "\perp \ ! \ !\ ! \perp" in Tex (remove space between \ and !).
A and B will be assumed to be not independent unless shown otherwise, but I know of no symbol for it.

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It seems that a crossed ⫫ would do it. In latex code \nBigCI or Unicode U+2aeb. Check its use at this nice lecture on causality

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