User:Googleaarex/Extended Up-Arrow Notation/Array

Array Up-Arrow Notation is 3rd part of Extended Up-arrow Notation series.

\(Omega\)-type arrow
We have \(\Omega\)-type arrow, \(a \uparrow_{,\uparrow} b = a \underbrace{\uparrow_{\uparrow_{... \uparrow_{\uparrow_b} ...}}}_{b} a\).