Mathematical Limitations of the Efficiency Gap

Authors

• Ryan Gantner, Saint John Fisher UniversityFollow

Document Type

Poster Presentation

Publication Date

4-17-2026

Keywords

fsc2026

Abstract

How do we detect gerrymandering? Created by lawyers to address this question in a particular way, the efficiency gap is a calculation that assigns a value to a state’s legislative divisions based on election results. Proponents argue that the value could help the courts objectively determine the presence of gerrymandering. Mathematicians have proved enough nuances in its properties to give us pause in implementation.  This work shares some of those nuances.

Comments

Poster presented at the 2026 Fisher Showcase, St. John Fisher University, April 17, 2026.

Publication Information

Gantner, Ryan, "Mathematical Limitations of the Efficiency Gap" (2026). Fisher Showcase 2026. Paper 109.
https://fisherpub.sjf.edu/fsc2026/109

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