Hi,

I have a problem with "Russell's paradox" which I have just learned about at school. Simply said, it means that:

Let's say we have setsandR. And according to Russell's paradox (or theory) there cannot exist such setA, that:R

But I think that such set "exist"...

What exactly means that ? Then the setcould be one of these:A

And what means that ? Then the setcould be one of these:A

So let's say that .

Then:

...soI have foundsuch setthat:R

So where is the paradox ?

Thanks.