Puzzles

Latest Articles

A Design Dilemma Solved, Minus Designs

Mathematics

A Design Dilemma Solved, Minus Designs

By Erica Klarreich

June 9, 2015

Read Later

A 150-year-old conundrum about how to group people has been solved, but many puzzles remain.

The Quanta Newsletter

Get highlights of the most important news delivered to your email inbox

Recent newsletters

About Quanta
Archive
Contact Us
Terms & Conditions
Privacy Policy

An editorially independent publication supported by the Simons Foundation. Simons Foundation

Use your social network

password

Remember me

Forgot your password ?

Don't have an account yet? Sign up

Forgot your password?

We’ll email you instructions to reset your password

Change your password

Enter your new password

Password

Retype new password

First Name

Last Name

Password

Retype Password

Creating an account means you accept Quanta Magazine's
Terms & Conditions and Privacy Policy

We care about your data, and we'd like to use cookies to give you a smooth browsing experience. Please agree and read more about our privacy policy.AGREE DISMISS

Saved Articles

Log out

Change password

Puzzles

A Design Dilemma Solved, Minus Designs