@parados,
oh well,
offcourse one formula is not difficult to put here, I understand that,
But again you don't get it.
If it was only about putting one formula out the book wouldn't have that many pages, now, would it?
So, we are not talking about 'one mathematical formula' offcourse.
It is about much much more.
I see that you are trying to dismiss something that can't be dismissed and you want to start iirelevant discussions.
So start reading the book.