User blog comment:MilkyWay90/Help with understanding Veblen array notation/@comment-30754445-20180811202716/@comment-30869823-20180821071739

@P進大好きbot

I wrote a blogpost about weak-fixed points, https://googology.wikia.com/wiki/User_blog:Fejfo/Weak_fixed_points but the short version is:

\( \alpha \) is a weak-fixed point of \( f \) if \( \beta<\alpha\Rightarrow\f(\beta)<\alpha \)