Abstract
We show the following results regarding complete sets.
NP-complete sets and PSPACE-complete sets are many-one autoreducible.Complete sets of any level of PH, MODPH, or the Boolean hierarchy over NP are many-one autoreducible.EXP-complete sets are many-one mitotic.NEXP-complete sets are weakly many-one mitotic.PSPACE-complete sets are weakly Turing-mitotic.If one-way permutations and quick pseudo-random generators exist, then NP-complete languages are m-mitotic.If there is a tally language in NP ∩ coNP - P, then, for every ε > 0, NP-complete sets are not 2n(1 + ε)-immune.
These results solve several of the open questions raised by Buhrman and Torenvliet in their 1994 survey paper on the structure of complete sets.