@article{arealisticexamplein2dimensionthat,
  title = {Notes on Worst-case Inefficiency of Gradient Descent Even in R^2},
  author = {Shiliang Zuo},
  year = {2020},
  eprint = {2008.07513},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2008.07513v2},
}