@article{zerothorderhardthresholdinggradienterror,
  title = {Zeroth-Order Hard-Thresholding: Gradient Error vs. Expansivity},
  author = {William de Vazelhes and Hualin Zhang and Huimin Wu and Xiao-Tong Yuan and Bin Gu},
  year = {2022},
  eprint = {2210.05279},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2210.05279v2},
}