OK good, thought it must be right but seemed a lot of maths, glad I'm not going mad! :wink:
I'm a bit confused over which ones will remain (but I do see it will be only a few, most cancel out).
So for example if I had:
|\psi> = 3|000> + 7i|001> +...
<\psi| = 3|000> - 7i|001> +...