User blog comment:Ikosarakt1/Extension of Chris Bird's array notation./@comment-5529393-20130307073923/@comment-5150073-20130307094737

I think that these comparisons becomes incorrect starting from \([1 [2 \backslash_{[2,2]} 2] 2]\), it has level \(\vartheta(\varepsilon_{\Omega+1} 2)\) rather than \(\vartheta(\varepsilon_{\Omega 2})\).