## A Parallel Repetition Theorem (1998)

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Venue: | SIAM Journal on Computing |

Citations: | 317 - 9 self |

### BibTeX

@ARTICLE{Raz98aparallel,

author = {Ran Raz},

title = {A Parallel Repetition Theorem},

journal = {SIAM Journal on Computing},

year = {1998},

volume = {27},

pages = {763--803}

}

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### Abstract

We show that a parallel repetition of any two-prover one-round proof system (MIP(2, 1)) decreases the probability of error at an exponential rate. No constructive bound was previously known. The constant in the exponent (in our analysis) depends only on the original probability of error and on the total number of possible answers of the two provers. The dependency on the total number of possible answers is logarithmic, which was recently proved to be almost the best possible [U. Feige and O. Verbitsky, Proc. 11th Annual IEEE Conference on Computational Complexity, IEEE Computer Society Press, Los Alamitos, CA, 1996, pp. 70--76].