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Descendpent is equal to \(\{5,4,3,2\}\) in BEAF.[1] The term was coined by ARsygo.

Approximations[]

Notation Approximation
Bird's array notation \(\{5,4,3,2\}\) (exact)
Chained arrow notation \(5\rightarrow5\rightarrow4\rightarrow4\)
Copy notation \(5[4\#6]\)
DeepLineMadom's Array Notation \(5[4,2]4\) (exact)
Hyper-E notation \(\text{E}[5]5\#\#5\#5\#5\#4\)
Hyperfactorial array notation \(4![3]\)
Strong array notation \(\text{s}(5,4,4,2)\)
X-Sequence Hyper-Exponential Notation \(5\{X+3\}4\) (exact)
Fast-growing hierarchy \(f_{\omega+3}(4)\)
Hardy hierarchy \(H_{\omega^{\omega+3}}(4)\)
Slow-growing hierarchy \(g_{\Gamma_{\Gamma_{\Gamma_0} } }(4)\)

Sources[]

  1. AR Googol - Numbers from BEAF. Retrieved 2023-03-19.