Hektotetrommthet

Hektotetrommthet is equal to \(f_{\theta(\Omega \uparrow\uparrow {100})}(10)\) using the fast-growing hierarchy. The term was coined by wiki user Denis Maksudov.

It is equal to \(f_{\psi(\Omega \uparrow\uparrow 101)}(10)\) using Buchholz's psi-function.