On page 62 of probability with Martingales by Williams, he defines:

> 
> For $n \in \mathbb{N}$, define
>  $X\_n(\omega) := \{ |Y(\omega)| \wedge n\}^p$
> 
> 
> 

I know $\wedge$ in the context of set theory, but that's it. What does it mean here?

I found these 2 uses:

<http://en.wikipedia.org/wiki/Wedge_sum>

<http://en.wikipedia.org/wiki/Wedge_product>

But it isn't clear to me if they provide the solutions (I don't think so, one is for topological spaces, the other for vectors).

Thank you in advance.