Bi-immunity separates strong NP-completeness notions

  • Authors:
  • A. Pavan;Alan L. Selman

  • Affiliations:
  • Department of Computer Science, Iowa State University, Ames, IA;Department of Computer Science and Engineering, University at Buffalo, Buffalo, NY

  • Venue:
  • Information and Computation
  • Year:
  • 2004

Quantified Score

Hi-index 0.00

Visualization

Abstract

We prove that if for some ε 0, NP contains a set that is DTIME(2nε))-bi-immune, then NP contains a set that is 2-Turing complete for NP (hence 3-truth-table complete) but not 1-truth-table complete for NP. Thus this hypothesis implies a strong separation of completeness notions for NP. Lutz and Mayordomo (Theor. Comput. Sci. 164 (1996) 141-163) and Ambos-Spies and Bentzien (J. Comput. Syst. Sci. 61(3) (2000) 335-361) previously obtained the same consequence using strong hypotheses involving resource-bounded measure and/or category theory. Our hypothesis is weaker and involves no assumptions about stochastic properties of NP.