@orthocresol Can you have a quick glance over the comments here and decide whether anything else can be removed... I feel the discussion went nowhere, or basically circled back Why is Coupled Cluster not variational?

actually come to think about it... I don't think the answer really addresses the question O.ô

@Martin-マーチン I don't know enough to say anything sensible about it...

Okay. Just leave it like this...

I'm sure it'll pop up the next time someone asks about coupled cluster.... thanks for looking