two short questions

1.

Now is this right? ?

2. Why does this hold:

I know that is a subset of A and B. But why does this hold, when we have a function?

thanks for the help

Printable View

- September 28th 2008, 07:09 AMkuntahtwo short questions
two short questions

1.

Now is this right? ?

2. Why does this hold:

I know that is a subset of A and B. But why does this hold, when we have a function?

thanks for the help - September 28th 2008, 07:38 AMPlato