User blog comment:Vel!/Ordinals and arrow notation/@comment-25418284-20131212025050

I see that the slow-growing hierarchy gives us \(f_{\varepsilon_1}(n) = n \uparrow\uparrow (2n)\). If SGH says so, I admit defeat.

So what is \(\omega \uparrow\uparrow (\omega + 1)\) in that case?