Deux superhept

is equal to \(\{7,7,7,7,7,7,7(1)7,7,7,7,7,7,7\}=\{7,7(1)(1)2\}\) in BEAF. The term was coined by .
==Approximations==
Notation 	Approximation
Bird's array notation 	\(\{7,7,7,7,7,7,7[2]7,7,7,7,7,7,7\}\) (exact)
Cascading-E notation 	\(\text{E}[7]7\#\text{^}\#\text{*}\#\text{^}\#7\)
DeepLineMadom's Array Notation 	\(7[8,7,7,7,7\{2\}7,7,7,7,7,7,7]7\)
X-Sequence Hyper-Exponential Notation 	\(7\{6X^{X+6}+7X^{X+5}+7X^{X+4}+7X^{X+3}+7X^{X+2}+7X^{X+1}+7X^{X}+7X^2+8X\}7\)
Fast-growing hierarchy 	\(f_{\omega^{\omega+6}6+{\omega+5}7+\omega^{\omega+4}7+\omega^{\omega+3}7+\omega^{\omega+2}7+\omega^{\omega+1}7+\omega^{\omega}7+\omega^2 7+\omega8}(7)\)
Hardy hierarchy 	\(H_{\omega^{\omega^{\omega+6}6+{\omega+5}7+\omega^{\omega+4}7+\omega^{\omega+3}7+\omega^{\omega+2}7+\omega^{\omega+1}7+\omega^{\omega}7+\omega^2 7+\omega8}}(7)\)
Slow-growing hierarchy (with this system of fundamental sequences)	\(g_{\psi_0(\Omega^{\Omega^{\Omega+6}6+\Omega^{\Omega+5}7+\Omega^{\Omega+4}7+\Omega^{\Omega+3}7+\Omega^{\Omega+2}7+\Omega^{\Omega+1}7+\Omega^{\Omega}7+\Omega^2 7+\Omega8})}(7)\)
==Sources==
Category:Numbers
Category:Numbers by ARsygo
Category:Exponentiated linear omega level
Category:BEAF
Category:Powers of 7
Category:Dimensional series