User blog comment:VoidSansXD/Ordinal notation/@comment-35434595-20190217190037/@comment-30754445-20190218232040

What the heck is "G0"?

Also, manually telling us what Δw is doesn't make the notation well-defined. What's Δ75? What's Δ(w+1)? What's Δ(w^2+w*7+6)? What's Δ(Δw)?

And you still haven't answered my question as to how we're supposed to write ordinals like epsilon_1 in your notation.