Deux superenn

is equal to \(\{9,9,9,9,9,9,9,9,9(1)9,9,9,9,9,9,9,9,9\}=\{9,9(1)(1)2\}\) in BEAF. The term was coined by .
==Approximations==
Notation 	Approximation
Bird's array notation 	\(\{9,9,9,9,9,9,9,9,9[2]9,9,9,9,9,9,9,9,9\}\) (exact)
Cascading-E notation 	\(\text{E}[9]9\#\text{^}\#\text{*}\#\text{^}\#9\)
DeepLineMadom's Array Notation 	\(9[10,9,9,9,9,9,9\{2\}9,9,9,9,9,9,9,9,9]9\)
X-Sequence Hyper-Exponential Notation 	\(9\{8X^{X+8}+9X^{X+7}+9X^{X+6}+9X^{X+5}+9X^{X+4}+9X^{X+3}+9X^{X+2}+9X^{X+1}+9X^{X}+9X^2+10X\}9\)
Fast-growing hierarchy 	\(f_{\omega^{\omega+8}8+{\omega+7}9+\omega^{\omega+6}9+\omega^{\omega+5}9+\omega^{\omega+4}9+\omega^{\omega+3}9+\omega^{\omega+2}9+\omega^{\omega+1}9+\omega^{\omega}9+\omega^2 9+\omega10}(9)\)
Hardy hierarchy 	\(H_{\omega^{\omega^{\omega+8}8+{\omega+7}9+\omega^{\omega+6}9+\omega^{\omega+5}9+\omega^{\omega+4}9+\omega^{\omega+3}9+\omega^{\omega+2}9+\omega^{\omega+1}9+\omega^{\omega}9+\omega^2 9+\omega10}}(9)\)
Slow-growing hierarchy (with this system of fundamental sequences)	\(g_{\psi_0(\Omega^{\Omega^{\Omega+8}8+{\Omega+7}9+\Omega^{\Omega+6}9+\Omega^{\Omega+5}9+\Omega^{\Omega+4}9+\Omega^{\Omega+3}9+\Omega^{\Omega+2}9+\Omega^{\Omega+1}9+\Omega^{\Omega}9+\Omega^2 9+\Omega10})}(9)\)
==Sources==
Category:Numbers
Category:Numbers by ARsygo
Category:Exponentiated linear omega level
Category:BEAF
Category:Powers of 3
Category:Dimensional series