**Dodecation** refers to the 12th hyperoperation starting from addition. It is equal to \(a \uparrow^{10}b\), in Knuth's up-arrow notation.^{[1]}

n doedecated to m is n hendecated to n undecated to ... undecated to n (m n's).

Dodecation can be written in array notation as \(\{a,b,10\}\), in chained arrow notation as \(a \rightarrow b \rightarrow 10\) and in Hyper-E notation as E(a)1#1#1#1#1#1#1#1#1#b.

Dodecational growth rate is equivalent to \(f_{11}(n)\) in the fast-growing hierarchy.

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