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Erica Klarreich

Contributing Correspondent

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Latest Articles

520px illustration for scale=free networks
network science

Scant Evidence of Power Laws Found in Real-World Networks

By Erica Klarreich
February 15, 2018
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A new study challenges one of the most celebrated and controversial ideas in network science.

Federico Ardila
Q&A

A Mathematician Who Dances to the Joys and Sorrows of Discovery

By Erica Klarreich
November 20, 2017
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Federico Ardila opens up about his journey as a mathematician, teacher, Colombian transplant, DJ and creator of mathematical spaces.

Pariah moonshine
number theory

Mathematicians Find Moonshine Link for Pariah Symmetries

By Erica Klarreich
September 22, 2017
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A type of symmetry so unusual that it was called a “pariah” turns out to have deep connections to number theory.

Nash equilibrium maze
game theory

In Game Theory, No Clear Path to Equilibrium

By Erica Klarreich
July 18, 2017
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John Nash’s notion of equilibrium is ubiquitous in economic theory, but a new study shows that it is often impossible to reach efficiently.

Illustration of a salamander
applied math

How to Quantify (and Fight) Gerrymandering

By Erica Klarreich
April 4, 2017
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Powerful new quantitative tools are now available to combat partisan bias in the drawing of voting districts.

Illustration: boxing gloves
Abstractions blog

Graph Isomorphism Vanquished — Again

By Erica Klarreich
January 14, 2017
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Just five days after posting a retraction, László Babai announced that he had fixed the error in his landmark graph isomorphism algorithm.

Illustration: boxing glove & graph
Abstractions blog

Complexity Theory Problem Strikes Back

By Erica Klarreich
January 5, 2017
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The legendary graph isomorphism problem may be harder than a 2015 result seemed to suggest.

Abstractions blog

All Is Not Fair in Cake-Cutting and Math

By Erica Klarreich
October 7, 2016
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When divvying something up, there’s more than one way to define what’s fair.

algorithms

How to Cut Cake Fairly and Finally Eat It Too

By Erica Klarreich
October 6, 2016
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Computer scientists have come up with a bounded algorithm that can fairly divide a cake among any number of people.


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