The Berlin Wall (named after the German barrier during World War II) is equal to E100#^^##100,000,000 = E100#^^#>#^^#>#^^#>...>#^^#>#^^#100 (100,000,000 #^^#'s) in Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.
Approximations in other notations[]
| Notation | Approximation |
|---|---|
| BEAF | \(X \uparrow\uparrow X \uparrow 2 \&\ 100,000,001\) |
| Bird's array notation | \(\{100,49999999 [1 \backslash 1 \backslash 2] 2\}\) |
| Hyperfactorial array notation | \(100,000,000![1,1,1,1,1,2]\) |
| Fast-growing hierarchy | \(f_{\zeta_0}(99,999,999)\) |
| Hardy hierarchy | \(H_{\zeta_0}(100,000,000)\) |
| Slow-growing hierarchy | \(g_{\vartheta(\zeta_{\Omega+1})}(100,000,000)\) |
Sources[]
- ↑ Saibian, Sbiis. 4.3.7 - Extended Cascading-E Numbers Part I. Retrieved 2015-03-05.