Equivalence conjecture for weighted homogeneous hypersurface germs and vector fields
Let define the isolated hypersurface germ , and let be its link. A vector field on is transversal to the link if it is everywhere transversal to . A vector field has a non-degenerate isolated singularity at when it extends to a neighborhood of in the ambient space and has a non-degenerate isolated singularity there.
Equivalence conjecture. The following statements are equivalent:
- is a weighted homogeneous germ.
- There exists a holomorphic vector field on that is everywhere transversal to the link .
- There exists a holomorphic vector field that extends to a neighborhood of the origin in the ambient space with a non-degenerate isolated singularity at .
The conjecture characterizes weighted homogeneity through the existence of suitable holomorphic vector fields. The source states that it is proved in part; the remaining implications or cases are not resolved in the supplied text.
References
Primary source
Diogo da Silva Machado and Jose Seade, “Generic vector fields on isolated complex hypersurface germs”, arXiv:2605.09210 (2026).
Additional references
4 papers in this index state this conjecture (2017–2026). The statement above is taken from the most recent of them; the others are arXiv:2408.00369, arXiv:1807.03665, arXiv:1706.09048.
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