A sign error in a mathematical paper invalidates related research and leads to the retraction of multiple associated papers.

They’ve just withdrawn three of the papers: * Algebraicity of Weil classes on split abelian eightfolds * Algebraicity of Kuga–Satake Correspondences for K3 Surfaces * The rational Hodge conjecture for products of K3 surfaces https://github.com/openai/math/blob/main/history.md

Gotta love this: > In “Algebraicity of Weil classes on split abelian eightfolds” a sign error invalidates a stabilization-trace cancellation argument and the construction used by two dependent papers. As a result, we have withdrawn the following three manuscripts: > > - Algebraicity of Weil classes on split abelian eightfolds > - Algebraicity of Kuga–Satake Correspondences for K3 Surfaces > - The rational Hodge conjecture for products of K3 surfaces https://github.com/openai/math/blob/main/history.md