@misc{siegel2019approximation,
  title={On the Approximation Properties of Neural Networks},
  author={Jonathan W. Siegel and Jinchao Xu},
  year={2019},
  eprint={1904.02311},
  archivePrefix={arXiv},
  primaryClass={math.CA},
  url={https://arxiv.org/abs/1904.02311}
}