The tethriditerator is equal to E100#^^#>(#+#)100 using Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.

Etymology

The name of this number comes from the infix "-di-" and the number tethriterator.

Approximations in other notations

Notation Approximation
BEAF ???
Bird's array notation ???
Fast-growing hierarchy \(f_{\varepsilon_{\omega 2} }(100)\)
Hardy hierarchy \(H_{\varepsilon_{\omega 2} }(100)\)
Slow-growing hierarchy ???

Sources

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