User blog comment:Hyp cos/TON, stable ordinals, and my array notation/@comment-31580368-20191108142819/@comment-11227630-20191109082916

I don't understand well about ordinals beyond 3rd-order Δ2-gap, so I cannot help at this level.

And, all gap ordinals are 2nd-order gap of length ≥1, then what does "class Gap-ordinals" mean?