User blog comment:Wythagoras/FGH with transfinite ordinals/@comment-24509095-20140311154434

Woah. So much madness. Haha, I didn't expect $$I$$ in there. Your FG($$I$$)H is a very powerful ordinal collapsing function. :)

It's very nice to see that just adding one to the subscript dramatically increases the ordinal :D