User blog comment:Cloudy176/Hyperfactorial array notation: Analysis part 1/@comment-1605058-20130507200045/@comment-1605058-20130508201522

I understand that it is well-defined, and I have an idea why it is so. I just stated that it isn't as obvious as it is for BEAF. But your answer made it even clearer for me.

I think chopping rule isn't really necessary, as we can use multiple terminating rules, although I may be wrong...