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A Simple Bivalency Proof that t-Resilient Consensus Requires t+1 Rounds

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Abstract

We use a straightforward bivalency argument borrowed from [FLP85] to show that in a synchronous system with up to t crash failures solving consensus requires at least t+1 rounds. The proof is simpler and more intuitive than the traditional one: It uses an easy forward induction rather than a more complex backward induction which needs the induction hypothesis several times.

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1998-09

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Cornell University

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computer science; technical report

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http://techreports.library.cornell.edu:8081/Dienst/UI/1.0/Display/cul.cs/TR98-1701

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technical report

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