# Math Help - Groups

1. ## Groups

Let A be a set. Prove that 2^A, delta) is a group.

2. Originally Posted by teramaries
Let A be a set. Prove that 2^A, delta) is a group.
Sorry, but a better explanation is needed here...

3. Originally Posted by Swlabr
Sorry, but a better explanation is needed here...

Of course it is. I bet somebody else's children that he meant that the power set of any set is a group under the operation of symmetric difference.
In fact, not only is that group but it actually is an elementary abelian group of exponent 2.
But let him realize his sloppy question and re-post it in an acceptable way.

Tonio