Combinatorica

, Volume 11, Issue 2, pp 131–143

An Ω(n4/3) lower bound on the randomized complexity of graph properties

  • Péter Hajnal
Article

Abstract

We improve King's Ω(n5/4) lower bound on the randomized decision tree complexity of monotone graph properties to Ω(n4/3). The proof follows Yao's approach and improves it in a different direction from King's. At the heart of the proof are a duality argument combined with a new packing lemma for bipartite graphs.

AMS subject classification code (1980)

68 Q 15 05 C 35 05 C 80 

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Copyright information

© Akadéiai Kiadó 1991

Authors and Affiliations

  • Péter Hajnal
    • 1
    • 2
  1. 1.Department of Computer SciencePrinceton UniversityPrincetonUSA
  2. 2.Bolyai InstituteUniversity of SzegedHungary

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