User blog comment:ArtismScrub/Applying Cascading-E logic to up-arrows/@comment-80.98.179.160-20180107172132

You can input double brackets, triple brackets, etc. with nowiki.

And we can define: a↑ ↑b=a↑  ...  ↑a with b s, and we can similarly define pentexpansion, hexexpansion,..., explosion, detonation, pentonation,..., {↑,↑,1,1,2},...