English

An elementary proof of a universal approximation theorem

Machine Learning 2024-12-24 v2

Abstract

In this short note, we give an elementary proof of a universal approximation theorem for neural networks with three hidden layers and increasing, continuous, bounded activation function. The result is weaker than the best known results, but the proof is elementary in the sense that no machinery beyond undergraduate analysis is used.

Keywords

Cite

@article{arxiv.2406.10002,
  title  = {An elementary proof of a universal approximation theorem},
  author = {Chris Monico},
  journal= {arXiv preprint arXiv:2406.10002},
  year   = {2024}
}

Comments

Added some additional clarification at several points in the arguments

R2 v1 2026-06-28T17:05:58.336Z