Math

When a fan of a cult anime series wanted to watch its episodes in every possible order, they asked a question that had perplexed combinatorial mathematicians for years

Scientists studying a centuries-old mystery of physics suggest two “arrows of time” control the evolution of quantum systems

Decode the clues from a broken calculator in this math puzzle

A mathematician has uncovered the stories behind the symbols used in math

What’s the largest couch that can turn a corner? After 58 years, we finally know

Arrange pieces into a square in this math puzzle

Math enthusiasts challenge one another to find special prime numbers, including those that are palindromes and Smarandache numbers

A look at the curious history of Venn diagrams and how they blend logic with geometry

Thousands of notoriously difficult problems in computer science are actually the same problem in disguise

A prime number study charts the limits of detection

All of statistics and much of science depends on probability—an astonishing achievement, considering no one’s really sure what it is

The proof that the Apéry constant is irrational remains one of the most bizarre events in the history of mathematics