Asymptotics of Redistricting the $n\times n$ Grid

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Hauptverfasser: Donnay, Christopher, Kahle, Matthew
Format: Preprint
Veröffentlicht: 2023
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author Donnay, Christopher
Kahle, Matthew
author_facet Donnay, Christopher
Kahle, Matthew
contents Redistricting is the act of dividing a region into districts for electoral representation. Motivated by this application, we study two questions. How many ways are there to partition the $n\times n$ grid into $n$ contiguous districts of equal size? How many of these partitions are ``compact"? We give asymptotic bounds on the number of plans: a lower bound of roughly $1.41^{n^2}$ and an upper bound of roughly $3.21^{n^2}$. We then use the lower bound to show that most plans are not compact.
format Preprint
id arxiv_https___arxiv_org_abs_2311_13550
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Asymptotics of Redistricting the $n\times n$ Grid
Donnay, Christopher
Kahle, Matthew
Combinatorics
05A02 (Primary) 05C02 (Secondary)
Redistricting is the act of dividing a region into districts for electoral representation. Motivated by this application, we study two questions. How many ways are there to partition the $n\times n$ grid into $n$ contiguous districts of equal size? How many of these partitions are ``compact"? We give asymptotic bounds on the number of plans: a lower bound of roughly $1.41^{n^2}$ and an upper bound of roughly $3.21^{n^2}$. We then use the lower bound to show that most plans are not compact.
title Asymptotics of Redistricting the $n\times n$ Grid
topic Combinatorics
05A02 (Primary) 05C02 (Secondary)
url https://arxiv.org/abs/2311.13550