Standard Simplex Conjecture for ranked choice voting

Let ρ(0,1)\rho\in(0,1) and nk!+k1n\geq k!+k-1. Consider partitions Ω1,,Ωk\Omega_1,\ldots,\Omega_k of Rn\mathbb{R}^n with Gaussian measure γn(Ωi)=1/k\gamma_n(\Omega_i)=1/k that maximize the ranked-choice noise-stability problem associated with the Borda count and the Condorcet Loser Criterion. The candidate regions are the regions determined by the corresponding regular-simplex comparison inequalities. Standard Simplex Conjecture for ranked choice voting. The maximizing sets are precisely those defined in the source's equation (ome1)(\mathrm{ome1}). This is presented as the continuous version of the Borda Count is Stablest Conjecture; its resolution is not given in the supplied text.

Sources & referencesView supporting material

Primary source

Steven Heilman, “Noise Stability of Ranked Choice Voting”, arXiv:2209.11183 (2022).

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