@misc{kriebel2026_nijenhuis_real_spectrum_compact_support,
  author = {Alec Kriebel},
  title = {A torus-collar proof of the real-spectrum compact-support classification for Nijenhuis operators},
  year = {2026},
  doi = {10.5281/zenodo.23431313},
  url = {https://doi.org/10.5281/zenodo.23431313},
  note = {Unrefereed preprint, version 1.0; manuscript and declared Zenodo date 2026-10-15; Zenodo record created 2026-10-17}
}