Quadritetrommthet

Quadritetrommthet is equal to \(f_{\theta(\Omega \uparrow\uparrow 4)}(10)\)My system of number names (FGS) - Traveling To The Infinity using the fast-growing hierarchy and Feferman's \(\theta\)-function with fundamental sequences using equalities to outputs of Buchholz's function. The term was coined by wiki user Denis Maksudov.
It is also equal to \(f_{\psi(\Omega\uparrow\uparrow 5)}(10)\) using Buchholz's function.
== Etymology ==
The 4 parts of the name, "quadri", "tetr", "omm" and "thet", mean 4, tetration, \(\Omega\) and \(\theta\) function respectively, which form \(\theta(\Omega\uparrow\uparrow4)\) when concatenated backwards. So the full name indicates the ordinal index of the FGH.
== Sources ==
Category:Numbers
Category:Numbers by Denis Maksudov
Category:10-based FGH numbers
Category:Bachmann's collapsing level