OpenAI said on Sept. 8 that autonomous AI agents had produced a proof resolving the Navier-Stokes problem, one of the seven Millennium Prize Problems in mathematics.

The company says it has cracked the physics of fluids using AI, solving one of the toughest puzzles in mathematics.

Mathematicians at OpenAI showed that the Navier-Stokes equations, which describe how fluids flow, can sometimes “blow up.” But the massive result is not without controversy.

Prior to the announcement, rumors were circulating online among mathematicians over the proof’s origins—OpenAI has denied all allegations