User blog comment:Ubersketch/Lexicographic ordinal notation up to the Bachmann-Howard ordinal/@comment-30869823-20190913225449/@comment-35470197-20190917020909

@Plain'N'Simple

> just like there's an easy isomorphism between PSS and a variation of Buchholz's OCF

You mean, you have finished to write an explicit proof of the termination through an explicit proof of the existence of an isomorphism between them under ZFC set theory without any additional assumptions, right? Is it accessible now?