This is a preview. Log in through your library . Abstract When attempting to generalize recursion theory to admissible ordinals, it may seem as if all classical priority constructions can be lifted to ...

This is a preview. Log in through your library . Abstract Let 〈Wn : n ∈ ω〉 be a canonical enumeration of recursively enumerable sets, and suppose T is a recursively enumerable extension of PA (Peano ...