The gigurea is equal to \(s(10,100,3,2) = s(10,s(10,99,3,2),2,2)\) using strong array notation.[1] The term was coined by Aarex Tiaokhiao.

Approximations in other notations

Notation Approximation
BEAF \(\{\{10,10\},100,2,2\}\)
Bird's array notation \(\{\{10,10\},100,2,2\}\)
Hyper-E notation \(E10\#\#10\#100\#100\)
Chained arrow notation \(10 \rightarrow 10 \rightarrow 100 \rightarrow 3\) (exact)
Hyperfactorial array notation \(100![3]\)
X-Sequence Hyper-Exponential Notation \(10\{X+2\}100\)
Fast-growing hierarchy (using CNF's fundamental sequences) \(f_{\omega+2}(99)\)
Hardy hierarchy \(H_{\omega^{\omega+2}}(99)\)
Slow-growing hierarchy \(g_{\varphi(1,1,0)}(99)\)

Sources

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