@article{brosbiascorrectedrandomizedsubspacesform,
  title = {BROS: Bias-Corrected Randomized Subspaces for Memory-Efficient Single-Loop Bilevel Optimization},
  author = {Hengrui Zhang and Boao Kong and Engao Zhang and Kun Yuan},
  year = {2026},
  eprint = {2605.10288},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.10288},
}