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1
Introduction
2
Framing Question
3
The Steps
4
Garys Salamander
5
Illinois 4th District
6
Florida 5th District
7
Maryland 3rd District
8
Pennsylvania 7th District
9
North Carolina 12 District
10
Isoparametric Theorem
11
Skew
12
Inverted Ness
13
Skew and convex hull
14
Dispersion
15
Compactness
16
Toy Example
17
Compactness Scores
18
Discrete Area and Perimeter
19
Metrics and Methods
20
North Carolina
21
Extreme gerrymandering
22
Conclusions
23
Questions
Description:
Explore the intersection of mathematics and politics in this thought-provoking lecture on political geometry and voting districts. Delve into the concept of "compactness" and its implications for fairness in electoral systems. Examine real-world examples of gerrymandering, including the infamous "Gerry-mander" and controversial districts across the United States. Learn about mathematical concepts such as the Isoparametric Theorem, skew, dispersion, and various compactness metrics. Analyze toy examples and compactness scores to understand their practical applications in assessing district shapes. Investigate discrete area and perimeter calculations, and explore different metrics and methods used in political geometry. Gain insights into extreme gerrymandering cases and their impact on democratic processes. Conclude with a discussion on the broader implications of these mathematical approaches for ensuring fair representation in electoral systems.

Political Geometry - Voting Districts, Compactness, and Ideas About Fairness

Joint Mathematics Meetings
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