TY - UNPB AU - Nifa, Anass TI - Negative Lichnerowicz modes on Einstein warped products and spheres PY - 2026 DA - 2026/08/31 DO - 10.5281/zenodo.22681024 UR - https://anassnifa.com/papers/negative-lichnerowicz-modes/ L1 - https://anassnifa.com/papers/negative-lichnerowicz-modes/manuscript.pdf LA - English M3 - Preprint N1 - v1; initial manuscript date: 31 August 2026; manuscript revision: 2 September 2026 DB - Zenodo KW - Einstein metrics KW - Spectral geometry KW - MSC 2020: 53C25 KW - MSC 2020: 58J50 ER -