User blog comment:P進大好きbot/New Googological Ruler/@comment-39541634-20190722124029

What's the difference between level 16 and level 17?

Yes, I know that the two are defined with different notations and different fundamental sequences. But what is - fundamentally - the difference between the two?

More concisely, can you do the following (in any notation of your choice):

1. Represent both ordinals in the same notation?a

2. Explicitly write down a fundamental sequence for the level 17 ordinal?

Thanks.

P.S.

Thank you for the way you helped me last time, in clarifying how Buchholz's ψ(Ωω) works.