Expander graphs are sparse graphs for which, whenever you split the graph into two parts, the number of edges going between the parts is proportional to the size of the smaller part. There are extreme...

Diffusion models are now the de facto approach to generative modeling across a wide range of data modalities including images, audio, videos, and visuomotor policies. In recent years, there has been a...

We’re delighted to share that Simons Institute Director Venkatesan Guruswami has been honored this summer with two 2026 Test of Time Awards for papers that transformed coding theory and pseudorandomne...

As of July 1, our friend and colleague Nikhil Srivastava is the Simons Institute’s Interim Associate Director. He succeeds Sampath Kannan, who returns to UPenn this fall, after two highly successful y...

Join us August 1–2, 2026 on the UC Berkeley campus for the largest summit dedicated to Agentic AI — 5,000+ attendees, world-class speakers, and a global livestream.

Some answers were correct and solved at a high level, in a similar way to a published paper. Some were correct but were so strange or clunky they took hours for a mathematician to decipher. Some were ...