Aperiodical News Roundup – April/May 2026

Here’s a short round-up of maths news stories from the last two months that we didn’t otherwise cover on the site. Thomas Dieterrich, a representative of the arXiv, has clarified the site’s AI policy – in a Twitter thread (non-Twitter mirror link) he explains that their Code of Conduct states that the an author of a paper posted on the arXiv “takes full responsibility for all its contents, irrespective of how the contents were generated” – meaning that “if generative AI tools generate inappropriate language, plagiarized content, biased content, errors, mistakes, incorrect references, or misleading content, and that output is included in scientific works, it is the responsibility of the author(s)”. The implications of this are serious – “If a submission contains incontrovertible evidence that the authors did not check the results of LLM generation, this means we can’t trust anything in the paper.The penalty is a 1-year ban from arXiv followed by the requirement that subsequent arXiv…