Greg Egan reports: Open Letter about the Mathathon This open letter calling for the cancellation of the Caltech “Mathathon”, has received 471* signatures so far. [Only members of the Caltech community or mathematicians at PhD student level or beyond are eligible to sign.] Now 771 signatures. “On October 30th, 2026, Caltech will begin hosting the Caltech Mathathon, a math hackathon in which participants are encouraged to solve open research problems by prompting LLMs. Two prominent AI companies, Anthropic and OpenAI, will supply participants with 2 million dollars in AI credits. This event is likely to have destructive impacts for the mathematical community.” docs.google.com/forms/d/e/…/viewform