A Proof of Parisi's Conjecture on the Random Assignment Problem

Details A Proof of Parisi's Conjecture on the Random Assignment Problem A Proof of Parisi's Conjecture on the Random Assignment Problem

2003-03-18

arxiv.org/abs/math/0303214v1

Mathematics

Combinatorics

Scientific paper

An assignment problem is the optimization problem of finding, in an m by n matrix of nonnegative real numbers, k entries, no two in the same row or column, such that their sum is minimal. Such an optimization problem is called a random assignment problem if the matrix entries are random variables. We give a formula for the expected value of the optimal k-assignment in a matrix where some of the entries are zero, and all other entries are independent exponentially distributed random variables with mean 1. Thereby we prove the formula 1+1/4+1/9+...+1/k^2 conjectured by G. Parisi for the case k=m=n, and the generalized conjecture of D. Coppersmith and G. B. Sorkin for arbitrary k, m and n.

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