@article{muononthestiefelmanifoldadmitsanexactclo,
  title = {Muon on the Stiefel Manifold Admits an Exact Closed-Form Update},
  author = {Mikhail Solonko and Molozhavenko Alexander and Maxim Rakhuba},
  year = {2026},
  eprint = {2608.06218},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.06218},
}