Revision #1 to TR09-022 | 23rd September 2009 10:37
Inseparability and Strong Hypotheses for Disjoint NP Pairs
Abstract:
This paper investigates the existence of inseparable disjoint
pairs of NP languages and related strong hypotheses in
computational complexity. Our main theorem says that, if NP does
not have measure 0 in EXP, then there exist disjoint pairs of NP
languages that are P-inseparable, in fact TIME(2^(n^k)-inseparable.
We also relate these conditions to strong hypotheses concerning
randomness and genericity of disjoint pairs.
Changes to previous version:
We prove that three of these implications
cannot be reversed by relativizable techniques, and we conjecture that this
also holds for the remaining implication.
TR09-022 | 16th February 2009 00:00
Inseparability and Strong Hypotheses for Disjoint NP Pairs
Abstract:
This paper investigates the existence of inseparable disjoint
pairs of NP languages and related strong hypotheses in
computational complexity. Our main theorem says that, if NP does
not have measure 0 in EXP, then there exist disjoint pairs of NP
languages that are P-inseparable, in fact TIME(2^(n^k)-inseparable.
We also relate these conditions to strong hypotheses concerning
randomness and genericity of disjoint pairs.