The inverse of $+$ is $-$, of $\times$ is $/$ and of $\text{^}$ is Log.
Continuing upwards hyperoperationally, what is the inverse of $↑↑$?
Whats more somtimes values that are fixed are given names, some being labels such as:
$2\times = \text{double}\\ \text{^}2 = \text{squared}$
And some that are also other functions, such as:
$\text{^}0.5 = \text{square root}\\\text{^}0.33... = \text{cube root}\\\text{^}-1 = \text{reciprocal}$
What are some for ↑↑?