@misc{Nifa2026NegativeLichnerowiczModes,
  author = {Nifa, Anass},
  title = {{Negative Lichnerowicz modes on Einstein warped products and spheres}},
  year = {2026},
  doi = {10.5281/zenodo.22681024},
  url = {https://anassnifa.com/papers/negative-lichnerowicz-modes/},
  howpublished = {Preprint, Zenodo},
  note = {v1; initial manuscript date: 31 August 2026; manuscript revision: 2 September 2026},
}