Fast Growing Hierarchy Calculator Direct

What is the Fast-Growing Hierarchy?

fα+1(n)=fαn(n)f sub alpha plus 1 end-sub of n equals f sub alpha to the n-th power of n Limit Step: When is a limit ordinal (like fast growing hierarchy calculator

Challenge 4: Undecidability

For ordinals beyond a certain recursive bound, the question “Is this ordinal a limit ordinal?” can be undecidable. Real calculators restrict to recursive ordinals and explicit fundamental sequences. What is the Fast-Growing Hierarchy