Parallel Repetition

How the soundness error of a proof or argument behaves under running independent copies in parallel.

Status Statement Tags
RBR Soundness Amplification
Known in the special case of r-round protocols whose standard and round-by-round soundness errors are maximally separated, eps_RBR about eps^{1/r}; open in general, including the eps^{2/r} regime the source’s own protocol occupies. 4 open
Fiat ShamirParallel Repetitionlower-bound
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