Duggan–Schwartz theorem
id:
duggan-schwartz-theorem-239-1377605
title:
Duggan–Schwartz theorem
text:
The Duggan–Schwartz theorem is a result about voting systems designed to choose a nonempty set of winners from the preferences of certain individuals, where each individual ranks all candidates in order of preference. It states that for three or more candidates, at least one of the following must hold: The system is not anonymous.
The system is imposed.
Every voter's top preference is in the set of winners.
The system can be manipulated by either an optimistic voter, one who can cast a ballot th
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wiki
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encyclopedia
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original url:
https://en.wikipedia.org/wiki/Duggan%E2%80%93Schwartz_theorem
date created:
date modified:
2024-02-18T13:26:51Z
main entity:
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