@article{anoptimalsauerlemmaoverkaryalphabets,
  title = {An Optimal Sauer Lemma Over $k$-ary Alphabets},
  author = {Steve Hanneke and Qinglin Meng and Shay Moran and Amirreza Shaeiri},
  year = {2026},
  eprint = {2604.12952},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.12952},
}