User blog comment:Hyp cos/Analysis - BEAF, FGH and SGH (part 3)/@comment-5529393-20131116090419/@comment-11227630-20131117011718

First, since C(ω)=ψ(ψI(0)), C1(ω)=ψ1(ψI(0)) --- a 1-uncountable ordinal, and it can be solved to Ω. Then C(#Ω@)=C(#C(#...C(#0@)...@)@).

A 1-uncountable ordinal is at least Ω but smaller than Ω2, and an α-uncountable ordinal is at least Ωα but smaller than Ωα+1.