@article{theeffectivenumberofnonzerostheoryandreg,
  title = {The Effective Number of Nonzeros: Theory and Regularization for Sparse Recovery},
  author = {Haoyu He and Hao Wang and Jiashan Wang and Qiankun Shi},
  year = {2026},
  eprint = {2603.13826},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.13826},
}