# Definition Of The Complement Of A Set

1. Oct 5, 2012

### Bashyboy

Hello, my book defines the complement of a set like so: {x ∈ U | x /∈ A}

To me, it seems like the definition should be $(x| x \in U \wedge x \notin A)$

Which is more proper?

2. Oct 5, 2012

### HallsofIvy

They both say exactly the same thing.

3. Oct 5, 2012

### Bashyboy

Okay, thank you.