OpenAI backed out of sponsoring a mathathon at CalTech after mathematicians signed an open letter decrying AI's effects on the field. Bloomberg/Getty Images The latest math problem OpenAI is trying to solve is a bunch of angry mathematicians.A researcher at OpenAI said on Thursday that the ChatGPT maker is no longer sponsoring Caltech's "math hackathon," an event where participants use large language models to solve research problems.OpenAI's exit follows an open letter released on Wednesday fro...