The (effective) Suslin-Kleene Theorem is obtained as a corollary of a standard proof of the classical Suslin Theorem, by noticing that it is mostly constructive and applying to it a naive realizability interpretation. Effective Descriptive Set Theory is advertized as a refinement of the classical theory of definability (on Polish spaces) developed in the first half of the 20th
Yiannis N. Moschovakis