English

Exact expressions for the maximal probability that all $k$-wise independent bits are 1

Probability 2024-07-29 v1

Abstract

Let M(n,k,p)M(n, k, p) denote the maximum probability of the event X1=X2==Xn=1X_1 = X_2 = \cdots = X_n=1 under a kk-wise independent distribution whose marginals are Bernoulli random variables with mean pp. A long-standing question is to calculate M(n,k,p)M(n, k, p) for all values of n,k,pn,k,p. This question has been partially addressed by several authors, primarily with the goal of answering asymptotic questions. The present paper focuses on obtaining exact expressions for this probability. To this end, we provide closed-form formulas of M(n,k,p)M(n,k,p) for pp near 0 as well as pp near 1.

Keywords

Cite

@article{arxiv.2407.18688,
  title  = {Exact expressions for the maximal probability that all $k$-wise independent bits are 1},
  author = {Daniel Berend and Philip A. Ernst and Aryeh Kontorovich and Rishi Kumar},
  journal= {arXiv preprint arXiv:2407.18688},
  year   = {2024}
}