Possible interpretation of tetrakulus

The possible interpretation of tetrakulus is equal to \(4\&4\&4 = \{ 4,3 /2 \} = \{4,4,4,4\}\ \&\ 4\) using the array of operator and BEAF. It has supertet entries. The term was coined by Cookie Fonster, who was unsure if tetrakulus should be \(4\&4\&4\) or \(4\&4\&4\&4\), so he coined both interpretations and called the latter the tetrakulus. Since BEAF has not been formalised by Bowers at this level, this number is currently ill-defined.
==Approximations==
Since it is not defined by now, the following approximation is just an expected value.
Notation 	Approximation
Fast-growing hierarchy	\(f_{\varphi(3,\omega,0,0)}(4)\)
Hardy hierarchy 	\(H_{\varphi(3,\omega,0,0)}(4)\)
Slow-growing hierarchy (using this system
of fundamental sequences)	\(g_{\psi_0(\Omega_2^{\Omega_2^2 3+\Omega_2\omega})}(4)\)
== Sources ==
== See also ==
Category:Numbers
Category:Higher array notation
Category:BEAF
Category:Powers of 2
Category:Numbers by Cookie Fonster
Category:Bachmann's collapsing level