On Milnor–Orlik’s theorem and admissible simultaneous good resolutions
Let f be a (possibly Newton degenerate) weighted homogeneous polynomial defining an isolated surface singularity at the origin of C3, and let {fs} be a generic deformation of its coefficients such that fs is Newton non-degenerate for s/=0. We show that there exists an “admissible” simultaneous good resolution of the family of functions fs for all small s, including s=0 which corresponds to the (possibly Newton degenerate) function f. As an application, we give a new geometrical proof of a weak version of the Milnor–Orlik theorem that asserts that the monodromy zeta-function of f (and hence its Milnor number) is completely determined by its weight, its weighted degree and its Newton boundary.
Authors
- Mutsuo Oka (ORCID: https://orcid.org/0000-0002-6957-346X)
- Christophe Eyral (ORCID: https://orcid.org/0000-0003-4729-3843)
Institutions
- Tokyo Institute of Technology (JP)
- Institute of Mathematics (PL)
- Polish Academy of Sciences (PL)
Publication Details
- Journal
- Annales Polonici Mathematici
- Published
- 2025-08-12
- DOI
- https://doi.org/10.4064/ap250326-15-7
- Primary Topic
- Algebraic Geometry and Number Theory
- Type
- article
- Field-Weighted Citation Impact
- 0.00