2-Local Random Reductions to 3-Valued Functions

  • Authors:
  • A. Pavan;N. V. Vinodchandran

  • Affiliations:
  • Iowa State University, Department of Computer Science, 50011, Ames, IA, USA;University of Nebraska-Lincoln, Department of Computer Science and Engineering, 68588, Lincoln, NE, USA

  • Venue:
  • Computational Complexity
  • Year:
  • 2008

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Abstract

Yao (in a lecture at DIMACS Workshop on structural complexity and cryptography, 1990) showed that if a language L is 2-locally random reducible to a Boolean function, then L ∈ PSPACE/poly. Fortnow & Szegedy quantitatively improved Yao’s result to show that such languages are in fact in NP/poly (Information Processing Letters, 1992). In this paper we extend Yao’s result to show that if a language L is 2-locally random reducible to a target function which takes values in {0, 1, 2}, then L ∈ PSPACE/poly.