@article{JMLR:v23:21-1404,
  author  = {Shijun Zhang and Zuowei Shen and Haizhao Yang},
  title   = {Deep Network Approximation: Achieving Arbitrary Accuracy with Fixed Number of Neurons},
  journal = {Journal of Machine Learning Research},
  year    = {2022},
  volume  = {23},
  number  = {276},
  pages   = {1--60},
  url     = {http://jmlr.org/papers/v23/21-1404.html}
}