User blog:Chronolegends/X Hierarchy

This follows up from my watercooler post here []

let λ range over the countable limit ordinals

and λ[n] be the nth member in the fundamental sequence of λ

$$ X_0(n)=n+9 $$

$$ X_{\lambda+1}(n) = X^n_{\lambda}(n)$$

$$ X_\lambda(n) = X_{\lambda[n]}(n)$$

Values in X hierarchy