The company’s announcement has been dogged by questions about whether it improperly used work from another research team or sought to deny credit — allegations OpenAI denies.The Navier-Stokes problem is a 200-year-old puzzle involving equations that describe the behavior and motion of fluids and gases.OpenAISept. 8, 2026, 9:51 PM EDTOpenAI said Tuesday that it has solved one of math’s most difficult problems, marking a seminal moment for the company. But the news has been plagued by controversy over how OpenAI reached its solution, whether it improperly used work from another research team and who should receive credit.Just a moment.We are getting your experience ready.