1. Oct 25, 2011

### Black Integra

Nothing much, I have this:

And I believe that, for some conditions
for a complex ψ,ϕ

What are those conditions I mentioned about? And which field of study I should go to see?

2. Oct 25, 2011

### mathman

Your first equation is obviously wrong, as you can see. For the second question, there are no conditions where it doesn't hold.

The problem lies in the fact that for non-integer exponents, the expression is not single valued.