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Troo-guppy is equal to \(\{10,10,10,20\}\) in BEAF.[1] The term was coined by ARsygo.

Approximations[]

Notation Approximation
Bird's array notation \(\{10,10,10,20\}\) (exact)
DeepLineMadom's Array Notation \(10[11,20]10\) (exact)
Hyper-E notation \(\text{E}10\#\#\#21\)
Hyperfactorial array notation \(10![11,19]\)
Strong array notation \(\text{s}(10,10,11,20)\)
X-Sequence Hyper-Exponential Notation \(10\{20X\}10\) (exact)
Fast-growing hierarchy \(f_{\omega20}(10)\)
Hardy hierarchy \(H_{\omega^{\omega20}}(10)\)
Slow-growing hierarchy \(g_{\varphi(19,9,0)}(10)\)

Sources[]

  1. AR Googol - Numbers from BEAF. Retrieved 2023-06-16.
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