## Latest Articles

### Mathematicians Attempt to Glimpse Past the Big Bang

By studying the geometry of model space-times, researchers offer alternative views of the universe’s first moments.

### Computer Scientists Invent an Efficient New Way to Count

By making use of randomness, a team has created a simple algorithm for estimating large numbers of distinct objects in a stream of data.

### Game Theory Can Make AI More Correct and Efficient

Researchers are drawing on ideas from game theory to improve large language models and make them more consistent.

### New Breakthrough Brings Matrix Multiplication Closer to Ideal

By eliminating a hidden inefficiency, computer scientists have come up with a new way to multiply large matrices that’s faster than ever.

### Scientists Find Optimal Balance of Data Storage and Time

Seventy years after the invention of a data structure called a hash table, theoreticians have found the most efficient possible configuration for it.

### In a ‘Dark Dimension,’ Physicists Search for the Universe’s Missing Matter

An idea derived from string theory suggests that dark matter is hiding in a (relatively) large extra dimension. The theory makes testable predictions that physicists are investigating now.

### How to Guarantee the Safety of Autonomous Vehicles

As computer-driven cars and planes become more common, the key to preventing accidents, researchers show, is to know what you don’t know.

### A Century Later, New Math Smooths Out General Relativity

Mathematicians prove a theorem that illuminates the geometry of universes with tiny amounts of mass.

### The Mathematician Who Sculpted the Shape of Space

Eugenio Calabi, who died on September 25, conceived of novel geometric objects that later became fundamental to string theory.