And we've already looked at ways of expressing this. The set of all things in the universe that aren't in A, we could also write as a universal set minus A. Once again, this is a capital U. This is not the union symbol right over here. Or we could literally write this as U and then we write that little slash looking thing, U slash A. So how do we represent that in the Venn diagram? Well, it would be all the stuff in U, it would be all the stuff in U that is not in A.